CVE-2021-22600

NameCVE-2021-22600
DescriptionA double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2941-1, DSA-5096-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1fixed
stretch (security)4.9.303-1fixed
buster4.19.235-1fixed
buster (security)4.19.232-1fixed
bullseye5.10.106-1fixed
bullseye (security)5.10.113-1fixed
bookworm5.17.3-1fixed
sid5.17.6-1fixed
linux-4.19 (PTS)stretch (security)4.19.232-1~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch(not affected)
linuxsourcebuster4.19.232-1DSA-5096-1
linuxsourcebullseye5.10.92-1
linuxsource(unstable)5.15.15-1
linux-4.19sourcestretch4.19.232-1~deb9u1DLA-2941-1

Notes

[stretch] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/ec6af094ea28f0f2dda1a6a33b14cd57e36a9755 (5.16-rc6)

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