Xenial update to 4.4.153 stable release
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Xenial |
Fix Released
|
Medium
|
Stefan Bader |
Bug Description
SRU Justification
Impact:
The upstream process for stable tree updates is quite similar
in scope to the Ubuntu SRU process, e.g., each patch has to
demonstrably fix a bug, and each patch is vetted by upstream
by originating either directly from a mainline/stable Linux tree or
a minimally backported form of that patch. The 4.4.153 upstream stable
patch set is now available. It should be included in the Ubuntu
kernel as well.
TEST CASE: TBD
The following patches from the 4.4.153 stable release shall be applied:
* x86/mm: Fix use-after-free of ldt_struct
* ovl: Ensure upper filesystem supports d_type
* ovl: Do d_type check only if work dir creation was successful
* ovl: warn instead of error if d_type is not supported
* Linux 4.4.153
CVE References
tags: | added: kernel-stable-tracking-bug |
Changed in linux (Ubuntu Xenial): | |
assignee: | nobody → Stefan Bader (smb) |
importance: | Undecided → Medium |
status: | New → In Progress |
Changed in linux (Ubuntu Xenial): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu): | |
status: | New → Invalid |
Skipped "x86/mm/pat: Fix L1TF stable backport for CPA" because that would only be required if we had reverted "86/mm/pat: Ensure cpa->pfn only contains page frame numbers" which upstream stable did in 4.4.104 but we did not. By sheer luck this failed to apply because of incorrect use of tabs and spaces in our version. Not sure what the issues were which led to the revert but if we ever have to we also need to pick up this one.
Manual adaption of "ovl: Ensure upper filesystem supports d_type" due to delta introduced by
"UBUNTU: SAUCE: overlay: add backwards compatible overlayfs format support V4".