CVE-2022-20421

NameCVE-2022-20421
DescriptionIn binder_inc_ref_for_node of binder.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-239630375References: Upstream kernel
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
buster4.19.249-2vulnerable
buster (security)4.19.304-1fixed
bullseye5.10.209-2fixed
bullseye (security)5.10.205-2fixed
bookworm6.1.76-1fixed
bookworm (security)6.1.69-1fixed
trixie, sid6.6.15-2fixed
linux-5.10 (PTS)stretch (lts), stretch5.10.205-2~deb9u1fixed
buster (security)5.10.209-2~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
linuxsourcebuster4.19.260-1
linuxsourcebullseye5.10.149-1DSA-5257-1
linuxsource(unstable)5.19.11-1
linux-5.10sourcestretch5.10.149-2~deb9u1ELA-723-1
linux-5.10sourcebuster5.10.149-2~deb10u1DLA-3173-1

Notes

https://source.android.com/docs/security/bulletin/2022-10-01
https://git.kernel.org/linus/a0e44c64b6061dda7e00b7c458e4523e2331b739 (6.0-rc4)

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