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

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)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

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebuster4.19.260-1
linuxsourcebullseye5.10.149-1DSA-5257-1
linuxsource(unstable)5.19.11-1
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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