CVE-2022-42720

NameCVE-2022-42720
DescriptionVarious refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-free conditions to potentially execute code.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3173-1, DSA-5257-1, ELA-723-1

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)4.9.320-2vulnerable
stretch (lts), stretch4.9.320-3vulnerable
buster (security), buster, buster (lts)4.19.316-1fixed
bullseye5.10.223-1fixed
bullseye (security)5.10.226-1fixed
bookworm6.1.106-3fixed
bookworm (security)6.1.112-1fixed
trixie6.10.11-1fixed
sid6.11.2-1fixed
linux-5.10 (PTS)stretch (lts), stretch5.10.218-1~deb9u1fixed
buster (security), buster, buster (lts)5.10.218-1~deb10u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch(unfixed)end-of-life
linuxsourcebuster(not affected)
linuxsourcebullseye5.10.149-1DSA-5257-1
linuxsource(unstable)6.0.2-1
linux-5.10sourcestretch5.10.149-2~deb9u1ELA-723-1
linux-5.10sourcebuster5.10.149-2~deb10u1DLA-3173-1

Notes

[buster] - linux <not-affected> (Vulnerable code not present)
https://www.openwall.com/lists/oss-security/2022/10/13/2
https://lore.kernel.org/netdev/20221013100522.46346-1-johannes@sipsolutions.net/T/#u
https://github.com/PurpleVsGreen/beacown

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