[Bug 1855341] Re: CONFIG_USELIB should be disabled

2020-05-04 Thread Tyler Hicks
n: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855341 Title: CONFIG_USELIB should be disabled To manage notifications about thi

[Bug 1855335] Re: CONFIG_DEBUG_CREDENTIALS should be enabled

2020-05-04 Thread Tyler Hicks
n: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855335 Title: CONFIG_DEBUG_CREDENTIALS should be enabled To manage notifications

[Bug 1855339] Re: CONFIG_LEGACY_PTYS should be disabled

2020-05-04 Thread Tyler Hicks
n: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855339 Title: CONFIG_LEGACY_PTYS should be disabled To manage notifications abo

[Bug 1855342] Re: CONFIG_SLAB_MERGE_DEFAULT should be disabled

2020-05-04 Thread Tyler Hicks
** Changed in: linux (Ubuntu) Status: In Progress => Triaged ** Changed in: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.ne

[Bug 1855338] Re: CONFIG_IO_STRICT_DEVMEM should be enabled

2020-05-04 Thread Tyler Hicks
n: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855338 Title: CONFIG_IO_STRICT_DEVMEM should be enabled To manage notifications

[Bug 1855336] Re: CONFIG_DEBUG_SG should be enabled

2020-05-04 Thread Tyler Hicks
n: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855336 Title: CONFIG_DEBUG_SG should be enabled To manage notifications about thi

[Bug 1855337] Re: CONFIG_DEBUG_NOTIFIERS should be enabled

2020-05-04 Thread Tyler Hicks
n: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855337 Title: CONFIG_DEBUG_NOTIFIERS should be enabled To manage notifications

[Bug 1855340] Re: CONFIG_HARDENED_USERCOPY_FALLBACK should be disabled

2020-05-04 Thread Tyler Hicks
** Changed in: linux (Ubuntu) Status: In Progress => Triaged ** Changed in: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.ne

[Bug 1855334] Re: CONFIG_DEBUG_LIST should be enabled

2020-05-04 Thread Tyler Hicks
n: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855334 Title: CONFIG_DEBUG_LIST should be enabled To manage notifications about

[Bug 1811162] Re: Turn on CONFIG_REFCOUNT_FULL for non-x86 arches

2020-05-04 Thread Tyler Hicks
** Changed in: linux (Ubuntu) Assignee: Tyler Hicks (tyhicks) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1811162 Title: Turn on CONFIG_REFCOUNT_FULL for non-x86 arches

Re: [Bug 1861521] Re: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled

2020-03-03 Thread Tyler Hicks
On 2020-03-02 07:53:18, AceLan Kao wrote: > Here is the test kernel and the patches I reverted/applied, could > anyone helps me verify it. I can confirm that the new kernel does _not_ regress brightness controls on the machine that caused me to initially open this bug report. Thanks! -- You rec

[Bug 1861521] Re: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled

2020-02-25 Thread Tyler Hicks
I enabled the KMS debug messages in the drm module: $ cat /etc/modprobe.d/drm-debug.conf options drm debug=0x04 $ sudo update-initramfs -u -k $(uname -r) && sudo reboot ... Unfortunately, it doesn't look like my device_id is set after the drm_dp_read_desc() in drm_dp_read_desc: $ dmesg | grep -i

[Bug 1861521] Re: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled

2020-02-25 Thread Tyler Hicks
Note that the quirks in the debug output from comment #9 are 0x because I've got still got commit 3269788061d2 ("USUNTU: SAUCE: drm/i915: Force DPCD backlight mode on Dell Precision 4K sku") reverted locally. -- You received this bug notification because you are a member of Ubuntu Bugs, which

[Bug 1861521] Re: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled

2020-02-25 Thread Tyler Hicks
** Tags added: champagne -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861521 Title: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled To manage notifications about this bug go to: h

[Bug 1861521] Re: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled

2020-02-25 Thread Tyler Hicks
To provide further verification, I built Ubuntu-5.4-5.4.0-14.17 with a single patch on top that reverts commit 3269788061d2 ("USUNTU: SAUCE: drm/i915: Force DPCD backlight mode on Dell Precision 4K sku"). My screen brightness controls are working again and I can undock from my external monitor with

[Bug 1861521] Re: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled

2020-02-25 Thread Tyler Hicks
I noticed that upstream v5.4.18 allowed me to adjust my screen brightness while Ubuntu-5.4-5.4.0-14.17 does not, which indicates an Ubuntu SAUCE patch as the culprit. I bisected between the two kernels and this was the result: $ git bisect good 3269788061d24e316633165608259de1c110b801 is the first

[Bug 1863234] Re: Disabling bpf() syscall on kernel lockdown break apps when secure boot is on

2020-02-20 Thread Tyler Hicks
Hi Brendan - What you're asking for is very different than the intent behind this bug report. It'll be best if you open a new bug report. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863234 Title:

[Bug 1863234] Re: Disabling bpf() syscall on kernel lockdown break apps when secure boot is on

2020-02-19 Thread Tyler Hicks
Eoan: https://lists.ubuntu.com/archives/kernel-team/2020-February/107613.html Disco: https://lists.ubuntu.com/archives/kernel-team/2020-February/107616.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bug

[Bug 1863234] Re: Disabling bpf() syscall on kernel lockdown break apps when secure boot is on

2020-02-19 Thread Tyler Hicks
** Description changed: [Impact] The bpf(2) system call is completely blocked in Disco and Eoan when Secure Boot is enabled due to overly restrictive Lockdown policies. This makes it so that all bpf related tools are not usable on those releases. [Test Case] Set up test BPF pr

[Bug 1863234] Re: Disabling bpf() syscall on kernel lockdown break apps when secure boot is on

2020-02-19 Thread Tyler Hicks
** Description changed: + [Impact] + + The bpf(2) system call is completely blocked in Disco and Eoan when + Secure Boot is enabled due to overly restrictive Lockdown policies. This + makes it so that all bpf related tools are not usable on those releases. + + [Test Case] + + Set up test BPF pr

[Bug 1863234] Re: Disabling bpf() syscall on kernel lockdown break apps when secure boot is on

2020-02-19 Thread Tyler Hicks
** Changed in: linux (Ubuntu Disco) Status: Triaged => In Progress ** Changed in: linux (Ubuntu Eoan) Status: Triaged => In Progress ** Changed in: linux (Ubuntu Disco) Assignee: (unassigned) => Tyler Hicks (tyhicks) ** Changed in: linux (Ubuntu Eoan)

[Bug 1863234] Re: Disabling bpf() syscall on kernel lockdown break apps when secure boot is on

2020-02-19 Thread Tyler Hicks
Hi Quentin - Thanks for the bug report! I do think that relaxing the eBPF restrictions in Eoan and Disco would be acceptable for Secure Boot purposes. ** Also affects: linux (Ubuntu Eoan) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Disco) Importance: Undecided

[Bug 1861238] Re: Root can lift kernel lockdown via USB/IP

2020-02-18 Thread Tyler Hicks
I've also verified the fix in 5.3.0-41.33-generic. ** Tags removed: verification-needed-eoan ** Tags added: verification-done-eoan -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861238 Title: Root

[Bug 1861238] Re: Root can lift kernel lockdown via USB/IP

2020-02-18 Thread Tyler Hicks
I've verified the fix in 4.15.0-89.89-generic. The sysrq help message is printed to the kernel log when trying to lift lockdown with the proof- of-concept and when trying to lift lockdown with alt+sysrq+x. ** Tags removed: verification-needed-bionic ** Tags added: verification-done-bionic -- You

[Bug 1862840] Re: [Bionic] i915 incomplete fix for CVE-2019-14615

2020-02-18 Thread Tyler Hicks
I've verified that the proof-of-concept does not show an information leak when running 4.15.0-89.89-generic. ** Tags removed: verification-needed-bionic ** Tags added: verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to U

[Bug 1862840] Re: [Bionic] i915 incomplete fix for CVE-2019-14615

2020-02-12 Thread Tyler Hicks
Submission to the Ubuntu kernel-team list: https://lists.ubuntu.com/archives/kernel-team/2020-February/107444.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1862840 Title: [Bionic] i915 incomp

[Bug 1862840] Re: [Bionic] i915 incomplete fix for CVE-2019-14615

2020-02-12 Thread Tyler Hicks
** Description changed: [Impact] Gregory Herrero reported that the proof-of-concept for CVE-2019-14615 indicates that the information leak is not fixed in the Bionic 4.15 kernel as indicated by USN-4255-1:  https://usn.ubuntu.com/4255-1/ This only affects Ubuntu's 4.15 kernel

[Bug 1862840] Re: [Bionic] i915 incomplete fix for CVE-2019-14615

2020-02-11 Thread Tyler Hicks
I've pushed a set of proposed backports which prevents the information leak when running the proof-of-concept code: https://git.launchpad.net/~tyhicks/ubuntu/+source/linux/+git/bionic/log/?h=cves/CVE-2020-8832 -- You received this bug notification because you are a member of Ubuntu Bugs, which i

[Bug 1861521] Re: [FOCAL][REGRESSION] Intel Gen 9 brightness cannot be controlled

2020-02-11 Thread Tyler Hicks
Another Gen 9 GPU that I have is not affected by this bug: $ glxinfo | grep Device Device: Mesa DRI Intel(R) HD Graphics 515 (Skylake GT2) (0x191e) $ cat /proc/version_signature Ubuntu 5.4.0-12.15-generic 5.4.8 I can increase and decrease the brightness without any issues. -- You rece

[Bug 1862840] [NEW] [Bionic] i915 incomplete fix for CVE-2019-14615

2020-02-11 Thread Tyler Hicks
minute or so to ensure that  # the information leak is not possible. [Regression Potential] TODO ** Affects: linux (Ubuntu) Importance: High Assignee: Tyler Hicks (tyhicks) Status: Invalid ** Affects: linux (Ubuntu Bionic) Importance: High Assignee: Tyler Hicks (ty

[Bug 1861238] Re: Root can lift kernel lockdown via USB/IP

2020-02-07 Thread Tyler Hicks
Proposed fixes have been sent to the kernel-team list. Focal: https://lists.ubuntu.com/archives/kernel-team/2020-February/107324.html Eoan: https://lists.ubuntu.com/archives/kernel-team/2020-February/107326.html Disco: https://lists.ubuntu.com/archives/kernel-team/2020-February/107328.html Bionic:

[Bug 1861238] Re: Root can lift kernel lockdown via USB/IP

2020-02-07 Thread Tyler Hicks
cts: linux (Ubuntu Focal) Importance: High Assignee: Tyler Hicks (tyhicks) Status: In Progress ** Also affects: linux (Ubuntu Disco) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Eoan) Importance: Undecided Status: New ** Changed in: linux (U

[Bug 1861238] Re: Root can lift kernel lockdown via USB/IP

2020-02-07 Thread Tyler Hicks
achieve a lockdown free environment by running 'mokutil --disable- validation' and rebooting. ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu) Status: Confirmed => In Progress ** Changed in: linux (Ubuntu) Assignee: (

[Bug 1861238] Re: Root can lift kernel lockdown via USB/IP

2020-02-07 Thread Tyler Hicks
** Description changed: + [Impact] + It's possible to turn off kernel lockdown by emulating a USB keyboard via USB/IP and sending an Alt+SysRq+X key combination through it. Ubuntu's kernels have USB/IP enabled (CONFIG_USBIP_VHCI_HCD=m and CONFIG_USBIP_CORE=m) with signed usbip_core and

[Bug 1859734] Re: i915 vulnerability

2020-02-04 Thread Tyler Hicks
The fix for this bug has been released for a little while now. See the info here: https://people.canonical.com/~ubuntu- security/cve/2019/CVE-2019-14615.html ** Changed in: linux (Ubuntu) Status: Fix Committed => Fix Released -- You received this bug notification because you are a membe

[Bug 1861521] Re: [FOCAL][REGRESSION] HP EliteBook 840 G5 screen brightness cannot be controlled

2020-01-31 Thread Tyler Hicks
I rebooted into Eoan's 5.3.0-29.31 kernel, with Focal's userspace, and verified that the screen brightness is still adjustable under that kernel. Additionally, it is worth noting that I saw the same "hp_wmi: Unknown event_id" warnings mentioned in comment 2 so they probably don't have anything to d

[Bug 1861521] [NEW] [FOCAL][REGRESSION] HP EliteBook 840 G5 screen brightness cannot be controlled

2020-01-31 Thread Tyler Hicks
Public bug reported: After upgrading from Eoan (5.3.0-29.31) to Focal (5.4.0-12.15), I no longer have the ability to control the backlight brightness on my HP EliteBook 840 G5. When pressing the brightness hotkeys, the on-screen indicator pops up and shows that the brightness setting is being chan

[Bug 1861521] Re: [FOCAL][REGRESSION] HP EliteBook 840 G5 screen brightness cannot be controlled

2020-01-31 Thread Tyler Hicks
When the privacy screen functionality is enabled, I see the following warnings in the logs: [188829.782403] hp_wmi: Unknown event_id - 20 - 0x46fe [188834.848948] hp_wmi: Unknown event_id - 20 - 0x3c00 [188835.624987] hp_wmi: Unknown event_id - 20 - 0x4600 The first warning is when I press the pr

[Bug 1860657] Re: Placeholder bug

2020-01-31 Thread Tyler Hicks
** Information type changed from Private Security to Public Security ** Summary changed: - Placeholder bug + arm64/KVM debug registers vulnerability ** Description changed: - Placeholder bug report for arm64 KVM issue. + [Impact] + + https://www.openwall.com/lists/oss-security/2020/01/30/5 +

[Bug 1861053] Re: no fatrace output in focal

2020-01-30 Thread Tyler Hicks
FWIW, fatrace works fine for me under the same kernel and fatrace version: $ sudo fatrace ... bash(51938): O /tmp/hi bash(51938): CW /tmp/hi ... tyhicks@elm:~$ cat /proc/version_signature Ubuntu 5.4.0-12.15-generic 5.4.8 $ apt policy fatrace fatrace: Installed: 0.13-2 Candidate: 0.13-2 Vers

[Bug 1861238] Re: Root can lift kernel lockdown via USB/IP

2020-01-29 Thread Tyler Hicks
** Information type changed from Public to Public Security -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861238 Title: Root can lift kernel lockdown via USB/IP To manage notifications about this b

[Bug 1860231] Re: 5.4.0-11 crash on cryptsetup open

2020-01-23 Thread Tyler Hicks
Upstream submission: https://lore.kernel.org/lkml/20200123091713.12623-1-stefan.ba...@canonical.com/T/#t -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1860231 Title: 5.4.0-11 crash on cryptsetup op

[Bug 1860231] Re: 5.4.0-11 crash on cryptsetup open

2020-01-23 Thread Tyler Hicks
Fix submitted by smb: https://lists.ubuntu.com/archives/kernel-team/2020-January/107055.html ** Changed in: linux (Ubuntu) Assignee: Andrea Righi (arighi) => Stéphane Graber (stgraber) ** Changed in: linux (Ubuntu) Assignee: Stéphane Graber (stgraber) => Stefan Bader (smb) -- You re

[Bug 1860231] Re: 5.4.0-11 crash on cryptsetup open

2020-01-22 Thread Tyler Hicks
** Description changed: - An attempt to run cryptsetup open on a newly created LUKS partition on - Ubuntu Core 20 causes a kernel crash. This happens in 100% of the - attempts on the snapd Core 20 installation test, but on an image created - to reproduce this bug it happens only when certain param

[Bug 1860231] Re: 5.4.0-11 crash on cryptsetup open

2020-01-20 Thread Tyler Hicks
** Description changed: An attempt to run cryptsetup open on a newly created LUKS partition on Ubuntu Core 20 causes a kernel crash. This happens in 100% of the attempts on the snapd Core 20 installation test, but on an image created to reproduce this bug it happens only when certain param

Re: [Bug 1859734] Re: i915 vulnerability

2020-01-19 Thread Tyler Hicks
On 2020-01-19 16:15:58, aaronleung wrote: > My OS have this bug, i try to install kernel 5.4 in my linuxmint19.3, > bug, instailing not found samething with from /lib/firmware/i915/ ,again. > i try to download from > https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/

[Bug 1855341] Re: CONFIG_USELIB should be disabled

2020-01-19 Thread Tyler Hicks
** Description changed: - + We should disable CONFIG_USELIB to make the uselib(2) system call + unreachable in an effort to reduce the kernel attack surface. + + The system call is only used by very old libc implementations and is + unlikely to be used today. + + This config option is recommend

[Bug 1855339] Re: CONFIG_LEGACY_PTYS should be disabled

2020-01-19 Thread Tyler Hicks
** Description changed: - + Legacy BSD PTYs have been replaced by UNIX 98 PTYs a long time ago. + Disable legacy BSD PTY support as it is no longer needed. + + This config option is recommended by the Kernel Self Protection + Project[1] and a 2019 study performed by Capsule 8 shows that it is +

[Bug 1855338] Re: CONFIG_IO_STRICT_DEVMEM should be enabled

2020-01-19 Thread Tyler Hicks
** Description changed: - + We should enable CONFIG_IO_STRICT_DEVMEM to restrict userspace access of + active io-memory ranges. + + This could impact kernel debugability. In that case, you may reboot with + iomem=relaxed on the kernel commandline to override this setting. + + + This config opt

[Bug 1855337] Re: CONFIG_DEBUG_NOTIFIERS should be enabled

2020-01-19 Thread Tyler Hicks
** Description changed: - + We should enable CONFIG_DEBUG_NOTIFIERS to ensure that notifier functions are present in the core kernel text or module text sections before calling + those functions. + + If an invalid function pointer is detected, a warning is issued and the + function is not calle

[Bug 1855336] Re: CONFIG_DEBUG_SG should be enabled

2020-01-19 Thread Tyler Hicks
** Description changed: - + Enable CONFIG_DEBUG_SG to perform sanity checks when performing + operations on scatterlists. If a sanity check fails a loud warning is + printed to the logs. + + This change may help in detection of an attack that relies on + scatterlist manipulation. ** Description

[Bug 1855335] Re: CONFIG_DEBUG_CREDENTIALS should be enabled

2020-01-19 Thread Tyler Hicks
** Description changed: - + We should enable CONFIG_DEBUG_CREDENTIALS to perform sanity checks, such as verifying usage counts and proper magic values, when handling cred + structs. If a cred sanity check fails a loud warning is printed to the + logs. + + The config option raises the bar on the

[Bug 1855334] Re: CONFIG_DEBUG_LIST should be enabled

2020-01-19 Thread Tyler Hicks
** Description changed: - + We should turn on CONFIG_DEBUG_LIST which does some sanity checking on the + surrounding linked list elements when adding or removing an element. If the sanity check fails, the list manipulation operation is not and a loud warning is printed to the logs in the form o

[Bug 1859734] Re: i915 vulnerability

2020-01-14 Thread Tyler Hicks
Importance: Undecided => High ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Tyler Hicks (tyhicks) ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-14615 ** Changed in: linux (Ubuntu) Status: In Progress => Fix Committed -- You received this bu

[Bug 1859522] Re: use-after-free in i915_ppgtt_close

2020-01-14 Thread Tyler Hicks
This is CVE-2020-7053 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-7053 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1859522 Title: use-after-free in i915_ppgtt_close To mana

[Bug 1859522] Re: use-after-free in i915_ppgtt_close

2020-01-14 Thread Tyler Hicks
** Information type changed from Private Security to Public Security ** Description changed: [Impact] Quan Luo and ycq from Codesafe Team of Legendsec at Qi'anxin Group reported a use-after-free issue in the i915 driver. This issue has been fixed in the upstream kernel starting in v5.2

[Bug 1854225] Re: Kernel oops and system lock up when invoking wg-quick up

2020-01-08 Thread Tyler Hicks
Hi Neil - I think that's a good idea since we haven't seen any progress on this private bug report. I'm not sure of the cause here but I think that we would have received a lot more reports if this was a widespread issue when using wg-quick (as we have in the past). ** Information type changed fro

[Bug 1858815] Re: PAN is broken for execute-only user mappings on ARMv8

2020-01-08 Thread Tyler Hicks
** Description changed: [Impact] It was discovered that upstream kernel commit cab15ce604e5 ("arm64: Introduce execute-only page access permissions"), which introduced execute-only user mappings, subverted the Privileged Access Never protections. The fix is to effectively revert

[Bug 1858815] Re: PAN is broken for execute-only user mappings on ARMv8

2020-01-08 Thread Tyler Hicks
In Progress ** Changed in: linux (Ubuntu Disco) Assignee: (unassigned) => Tyler Hicks (tyhicks) ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Tyler Hicks (tyhicks) ** Changed in: linux (Ubuntu Eoan) Assignee: (unassigned) => Tyler Hicks (tyhicks) ** Chan

[Bug 1858815] [NEW] PAN is broken for execute-only user mappings on ARMv8

2020-01-08 Thread Tyler Hicks
*** This bug is a security vulnerability *** Public security bug reported: [Impact] It was discovered that upstream kernel commit cab15ce604e5 ("arm64: Introduce execute-only page access permissions"), which introduced execute-only user mappings, subverted the Privileged Access Never protections

[Bug 1855341] [NEW] CONFIG_USELIB should be disabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855341

[Bug 1855339] [NEW] CONFIG_LEGACY_PTYS should be disabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855339

[Bug 1855342] [NEW] CONFIG_SLAB_MERGE_DEFAULT should be disabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855342

[Bug 1855340] [NEW] CONFIG_HARDENED_USERCOPY_FALLBACK should be disabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855340

[Bug 1855337] [NEW] CONFIG_DEBUG_NOTIFIERS should be enabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855337

[Bug 1855334] [NEW] CONFIG_DEBUG_LIST should be enabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855334

[Bug 1855336] [NEW] CONFIG_DEBUG_SG should be enabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855336

[Bug 1855335] [NEW] CONFIG_DEBUG_CREDENTIALS should be enabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855335

[Bug 1855338] [NEW] CONFIG_IO_STRICT_DEVMEM should be enabled

2019-12-05 Thread Tyler Hicks
Public bug reported: ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855338

[Bug 1774711] Re: excessive seccomp audit logs

2019-12-02 Thread Tyler Hicks
On 2019-11-30 21:44:33, A. Denton wrote: > Will the required pat set be backported to older kernel, such as Ubuntu > 4.15.0-70.79-generic 4.15.18? No, there are no plans to backport them at this time. If you'd like to make use of a kernel containing those patches in Ubuntu 18.04 LTS, please consi

[Bug 1844764] Re: ubuntu_lttng_smoke_test failed with module build on B-hwe-edge 5.3.0

2019-11-22 Thread Tyler Hicks
** Also affects: lttng-modules (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: lttng-modules (Ubuntu Bionic) Status: New => In Progress ** Changed in: lttng-modules (Ubuntu Bionic) Importance: Undecided => Medium ** Changed in: lttng-modules (Ubuntu Bionic)

[Bug 1848588] Re: ndiswrapper 1.60-8ubuntu1 ADT test failure with linux 5.4.0-1.2

2019-11-22 Thread Tyler Hicks
I've sponsored an upload from Paolo to address this issue. I've asked him to fill in the SRU template and I'm hoping that he's able to do that before the SRU team gets to the upload. ** Changed in: ndiswrapper (Ubuntu Bionic) Assignee: Thadeu Lima de Souza Cascardo (cascardo) => Paolo Pisati

[Bug 1848596] Re: xtables-addons 3.2-1ubuntu3 ADT test failure with linux 5.4.0-1.2

2019-11-22 Thread Tyler Hicks
I've sponsored an upload from Paolo to address this issue in Bionic. I've asked him to fill in the SRU template and I'm hoping that he's able to do that before the SRU team gets to the upload. ** Also affects: xtables-addons (Ubuntu Bionic) Importance: Undecided Status: New ** Changed i

[Bug 1837889] Re: ndiswrapper 1.60-8 ADT test failure with linux 5.3.0-0.1

2019-11-22 Thread Tyler Hicks
Sorry Thadeu but Paolo had already passed me a debdiff to sponsor for this bug. ** Changed in: ndiswrapper (Ubuntu Bionic) Assignee: Thadeu Lima de Souza Cascardo (cascardo) => Paolo Pisati (p-pisati) -- You received this bug notification because you are a member of Ubuntu Bugs, which is s

[Bug 1848584] Re: dahdi-linux 1:2.11.1~dfsg-1ubuntu5 ADT test failure with linux 5.4.0-1.2

2019-11-22 Thread Tyler Hicks
I've sponsored an upload from Paolo to address this issue. I've asked him to fill in the SRU template and I'm hoping that he's able to do that before the SRU team gets to the upload. ** Also affects: dahdi-linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: dahdi-linu

[Bug 1852575] Re: Kernels 5.022 or higher booting issues

2019-11-14 Thread Tyler Hicks
Hi Martin - Thanks for the bug report. Please follow the instructions mentioned in comment 1 so that we can have a better view into what's going on. In the meantime, can you tell us if you use full disk encryption with LUKS/dm-crypt? Thanks! -- You received this bug notification because you are

[Bug 1852521] Re: Unable to boot "Gave up waiting for root device" for kernel version 5.3.0-19 & 5.3.0-22

2019-11-14 Thread Tyler Hicks
Thanks for the report, Shaform. There are a few other bug reports against 5.3.0-22 and we're trying to understand if there's a common link. It looks like you're using LUKS/dm-crypt to do full disk encryption of your root partition so we're waiting to hear if that's common throughout the other repor

[Bug 1852586] Re: Boot hangs after "Loading initial ramdisk ..."

2019-11-14 Thread Tyler Hicks
Hi Eugen - Thanks for the bug report and sorry about the trouble you're experiencing. I'm trying to figure out if there is any link between a few different bug reports that I'm seeing come in for 5.3.0-22. It looks like the dm_crypt module is loaded on your system so I'd like for you to verify her

[Bug 1852435] Re: Boots fine with 5.3.0-19, doesn't boot any more with 5.3.0-22

2019-11-14 Thread Tyler Hicks
Hi Andrej - Thanks for the bug report and sorry for the trouble. The 5.3.0-22 kernel had a bunch of changes in addition to the Intel related security fixes. Lets start by ruling some things out. I'd like for you to *separately* try two different kernel command-line parameters. The first is "miti

[Bug 1850867] Re: refcount underflow and type confusion in shiftfs

2019-11-12 Thread Tyler Hicks
** Information type changed from Private Security to Public Security -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850867 Title: refcount underflow and type confusion in shiftfs To manage notifica

[Bug 1852141] Re: CVE-2019-0155: incomplete fix for 64-bit x86 kernels

2019-11-12 Thread Tyler Hicks
** Description changed: [Impact] The initial set of Ubuntu kernel updates to address CVE-2019-0155 are not complete for 64-bit x86 kernels (amd64). The 32-bit x86 kernel (i386) updates are complete. It may be possible for an attacker to bypass the mitigations on 64-bit systems. + + T

[Bug 1852047] [NEW] [Bionic][Regression] Disabling EPT results in KVM guests that won't start

2019-11-10 Thread Tyler Hicks
Public bug reported: Starting with 4.15.0-68.77, currently in bionic-proposed, I can no longer launch VMs when I disable EPT support in the kvm_intel module. This works fine under 4.15.0-66.75 from bionic-security. ubuntu@vought:~$ cat /proc/version_signature Ubuntu 4.15.0-68.77-generic 4.15.18

[Bug 1851412] Re: Verify kexec image signatures on arm64

2019-11-05 Thread Tyler Hicks
** Information type changed from Private Security to Public Security -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1851412 Title: Verify kexec image signatures on arm64 To manage notifications abou

[Bug 1842751] Re: [disco] [eoan] After unmount, cannot open /dev/vdb: Device or resource busy

2019-10-30 Thread Tyler Hicks
Hello - Does the recent switch from New -> Triaged for charm-cinder and charm-nova-compute mean that someone was able to determine that the charms are to blame and perhaps not the kernel? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1847189] Re: Bad posix clock speculation mitigation backport

2019-10-22 Thread Tyler Hicks
I've verified the kernel in xenial-proposed: tyhicks@sec-xenial-amd64:~$ cat /proc/version_signature Ubuntu 4.4.0-167.196-generic 4.4.197 tyhicks@sec-xenial-amd64:~$ cat test.c #include #include int main(void) { int rc = clock_gettime(10, 0); if (rc < 0) perror(

[Bug 1847478] Re: eoan kernel does not contain "ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule"

2019-10-18 Thread Tyler Hicks
This is CVE-2019-18198 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-18198 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1847478 Title: eoan kernel does not contain "ipv6: do no

[Bug 1802622] Re: Ubuntu Cosmic nvidia-340 needs patch for "Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLUB object 'nvidia_stack_t'

2019-10-17 Thread Tyler Hicks
Thanks for pointing that out! I'm marking this bug as fixed for nvidia- graphics-drivers-340. ** Changed in: nvidia-graphics-drivers-340 (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1802622] Re: Ubuntu Cosmic nvidia-340 needs patch for "Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLUB object 'nvidia_stack_t'

2019-10-17 Thread Tyler Hicks
We're considering disabling CONFIG_HARDENED_USERCOPY_FALLBACK in preparation for 20.04 LTS so getting this fixed soon would be necessary to keep the driver working. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad

[Bug 1811162] Re: Turn on CONFIG_REFCOUNT_FULL for non-x86 arches

2019-10-10 Thread Tyler Hicks
** Changed in: linux (Ubuntu) Status: Confirmed => Triaged ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Tyler Hicks (tyhicks) -- You received this bug notification because you are a member of Ub

[Bug 1847478] Re: eoan kernel does not contain "ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule"

2019-10-09 Thread Tyler Hicks
Fix submitted: https://lists.ubuntu.com/archives/kernel- team/2019-October/104623.html Since we're just about one week from the release of Eoan, this fix may not make the Eoan release. If that's the case, it will be included in the initial set of Stable Release Updates (SRU) for the Eoan kernels.

[Bug 1847478] Re: eoan kernel does not contain "ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule"

2019-10-09 Thread Tyler Hicks
Thanks to Jason for alerting us of this issue and pointing us at the fix! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1847478 Title: eoan kernel does not contain "ipv6: do not free rt if FIB_LOOKU

[Bug 1847478] Re: eoan kernel does not contain "ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule"

2019-10-09 Thread Tyler Hicks
** Description changed: + [Impact] + + An unprivileged local attacker could cause a denial of service, or + possibly execute arbitrary code due to an ipv6 regression. + + [Test Case] + + An unpatched system will crash with the following command: + + $ unshare -rUn sh -c 'ip link add dummy1 typ

[Bug 1847478] Re: wireguard crashes system shortly after wg-quick down wg0

2019-10-09 Thread Tyler Hicks
** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => In Progress ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Tyler Hicks

[Bug 1847189] Re: Bad posix clock speculation mitigation backport

2019-10-07 Thread Tyler Hicks
Fix submitted: https://lists.ubuntu.com/archives/kernel- team/2019-October/104582.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1847189 Title: Bad posix clock speculation mitigation backport T

[Bug 1847189] [NEW] Bad posix clock speculation mitigation backport

2019-10-07 Thread Tyler Hicks
) Importance: Undecided Status: Invalid ** Affects: linux (Ubuntu Xenial) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xeni

[Bug 1845391] Re: SafeSetID LSM should be built but disabled by default

2019-09-25 Thread Tyler Hicks
A pull request for 5.4 included a fix to make SafeSetID useful due to a bug in 5.3. Details can be read here: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1b5fb415442eb3ec946d48afe8c87b0f2fd42d7c The needed commit is located here: https://git.kernel.org/pub/scm/l

[Bug 1845391] [NEW] SafeSetID LSM should be built but disabled by default

2019-09-25 Thread Tyler Hicks
,apparmor Documentation on configuring SafeSetID can be found here: https://www.kernel.org/doc/html/latest/admin-guide/LSM/SafeSetID.html ** Affects: linux (Ubuntu) Importance: Medium Assignee: Tyler Hicks (tyhicks) Status: In Progress -- You received this bug notification because

[Bug 1845383] [NEW] CONFIG_LSM should not specify loadpin since it is not built

2019-09-25 Thread Tyler Hicks
ot;yama,integrity,apparmor" [Regression Potential] Low. This just limits the CONFIG_LSM value to only contain LSMs that are being built. ** Affects: linux (Ubuntu) Importance: Low Assignee: Tyler Hicks (tyhicks) Status: In Progress ** Affects: linux (Ubuntu Disco) Import

[Bug 1829055] Re: CVE-2019-11815

2019-09-23 Thread Tyler Hicks
This has been fixed for some time. Please see the Ubuntu CVE Tracker for kernel version information: https://people.canonical.com/~ubuntu- security/cve/2019/CVE-2019-11815.html ** Changed in: linux (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because y

[Bug 1839890] Re: openafs 1.8.0~pre5-1ubuntu1 fails to build on 5.0 kernels

2019-09-23 Thread Tyler Hicks
I've sponsored an upload from Connor to Bionic. Thanks, Connor! ** Changed in: openafs (Ubuntu Bionic) Status: Incomplete => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1839890 T

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