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
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https://bugs.launchpad.net/bugs/1766629
Title:
linux-image packages need to Breaks flash-kernel << 3.90ubuntu2
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Bionic:
Fix Released
Bug description:
Due to the fact that we are no longer guaranteed to produce an initrd
from our postinst, flash-kernel can fail on upgrade when it attempts
to operate (incorrectly, because it's not smart) on the wrong kernel,
and fails to find the initrd we've not yet made.
This is worked around in flash-kernel 3.90ubuntu2, but all linux-image
packages need to Breaks on << that version to ensure upgrade ordering.
This should only apply to kernels which build on arm64 or armhf.
To manage notifications about this bug go to:
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