This bug was fixed in the package linux - 4.15.0-22.24
---------------
linux (4.15.0-22.24) bionic; urgency=medium
* CVE-2018-3639 (powerpc)
- powerpc/64s: Add support for a store forwarding barrier at kernel
entry/exit
- stf-barrier: set eieio instruction bit 6 for future optimisations
* CVE-2018-3639 (x86)
- x86/nospec: Simplify alternative_msr_write()
- x86/bugs: Concentrate bug detection into a separate function
- x86/bugs: Concentrate bug reporting into a separate function
- x86/bugs: Read SPEC_CTRL MSR during boot and re-use reserved bits
- x86/bugs, KVM: Support the combination of guest and host IBRS
- x86/bugs: Expose /sys/../spec_store_bypass
- x86/cpufeatures: Add X86_FEATURE_RDS
- x86/bugs: Provide boot parameters for the spec_store_bypass_disable
mitigation
- x86/bugs/intel: Set proper CPU features and setup RDS
- x86/bugs: Whitelist allowed SPEC_CTRL MSR values
- x86/bugs/AMD: Add support to disable RDS on Fam[15,16,17]h if requested
- x86/KVM/VMX: Expose SPEC_CTRL Bit(2) to the guest
- x86/speculation: Create spec-ctrl.h to avoid include hell
- prctl: Add speculation control prctls
- x86/process: Allow runtime control of Speculative Store Bypass
- x86/speculation: Add prctl for Speculative Store Bypass mitigation
- nospec: Allow getting/setting on non-current task
- proc: Provide details on speculation flaw mitigations
- seccomp: Enable speculation flaw mitigations
- x86/bugs: Make boot modes __ro_after_init
- prctl: Add force disable speculation
- seccomp: Use PR_SPEC_FORCE_DISABLE
- seccomp: Add filter flag to opt-out of SSB mitigation
- seccomp: Move speculation migitation control to arch code
- x86/speculation: Make "seccomp" the default mode for Speculative Store
Bypass
- x86/bugs: Rename _RDS to _SSBD
- proc: Use underscores for SSBD in 'status'
- Documentation/spec_ctrl: Do some minor cleanups
- x86/bugs: Fix __ssb_select_mitigation() return type
- x86/bugs: Make cpu_show_common() static
* LSM Stacking prctl values should be redefined as to not collide with
upstream prctls (LP: #1769263) // CVE-2018-3639
- SAUCE: LSM stacking: adjust prctl values
linux (4.15.0-21.22) bionic; urgency=medium
* linux: 4.15.0-21.22 -proposed tracker (LP: #1767397)
* initramfs-tools exception during pm.DoInstall with do-release-upgrade from
16.04 to 18.04 (LP: #1766727)
- Add linux-image-* Breaks on s390-tools (<< 2.3.0-0ubuntu3)
* linux-image-4.15.0-20-generic install after upgrade from xenial breaks
(LP: #1767133)
- Packaging: Depends on linux-base that provides the necessary tools
* linux-image packages need to Breaks flash-kernel << 3.90ubuntu2
(LP: #1766629)
- linux-image-* breaks on flash-kernel (<< 3.90ubuntu2)
-- Stefan Bader <stefan.ba...@canonical.com> Tue, 15 May 2018 07:41:28
+0200
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1767133
Title:
linux-image-4.15.0-20-generic install after upgrade from xenial breaks
Status in linux package in Ubuntu:
Fix Released
Status in linux-hwe-edge package in Ubuntu:
Invalid
Status in linux source package in Xenial:
Invalid
Status in linux-hwe-edge source package in Xenial:
Fix Released
Status in linux source package in Bionic:
Fix Released
Status in linux-hwe-edge source package in Bionic:
Invalid
Bug description:
[Impact]
Some upgrades from xenial to bionic break.
[Test Case]
Change sources.list from xenial to bionic, then apt install
linux-image-4.15.0-20-generic.
[Regression Potential]
The kernel may be uninstallable if there is no linux-base with the
appropriate version in the archive.
----
When installing the linux-image-4.15.0-20-generic kernel from bionic
on xenial breaks because of the unversioned Depends on linux-base.
/var/lib/dpkg/info/linux-image-4.15.0-20-generic.postinst: 50:
/var/lib/dpkg/info/linux-image-4.15.0-20-generic.postinst:
linux-update-symlinks: not found
dpkg: error processing package linux-image-4.15.0-20-generic (--configure):
subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
linux-image-4.15.0-20-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)
If the trigger is called, when some meta packages are installed, it
won't happen. If all packages are upgraded, it's possible linux-base
is going to be upgraded first, so the problem won't happen either.
So, not all upgrades will be affected.
To manage notifications about this bug go to:
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