CVE-2022-0492

NameCVE-2022-0492
DescriptionA vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2940-1, DLA-2941-1, DSA-5095-1, DSA-5096-1, ELA-577-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie, jessie (lts)3.16.84-1vulnerable
stretch (security)4.9.320-2fixed
stretch (lts), stretch4.9.320-3fixed
buster4.19.249-2fixed
buster (security)4.19.304-1fixed
bullseye5.10.209-2fixed
bullseye (security)5.10.216-1fixed
bookworm6.1.76-1fixed
bookworm (security)6.1.90-1fixed
trixie6.7.12-1fixed
sid6.8.9-1fixed
linux-4.19 (PTS)stretch (security)4.19.232-1~deb9u1fixed
stretch (lts), stretch4.19.304-1~deb9u1fixed
linux-4.9 (PTS)jessie, jessie (lts)4.9.303-1~deb8u3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch4.9.303-1DLA-2940-1
linuxsourcebuster4.19.232-1DSA-5096-1
linuxsourcebullseye5.10.103-1DSA-5095-1
linuxsource(unstable)5.16.7-1
linux-4.19sourcestretch4.19.232-1~deb9u1DLA-2941-1
linux-4.9sourcejessie4.9.303-1~deb8u1ELA-577-1

Notes

https://www.openwall.com/lists/oss-security/2022/02/04/1
https://git.kernel.org/linus/24f6008564183aa120d07c03d9289519c2fe02af

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