CVE-2021-3609

NameCVE-2021-3609
Description.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2713-1, DLA-2714-1, DSA-4941-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)buster, buster (security)4.19.249-2fixed
bullseye5.10.140-1fixed
bullseye (security)5.10.136-1fixed
bookworm, sid5.19.6-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch4.9.272-2DLA-2713-1
linuxsourcebuster4.19.194-3DSA-4941-1
linuxsource(unstable)5.10.46-1
linux-4.19sourcestretch4.19.194-3~deb9u1DLA-2714-1

Notes

https://www.openwall.com/lists/oss-security/2021/06/19/1

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