CVE-2021-3743

NameCVE-2021-3743
DescriptionAn out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
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-2785-1, DSA-4978-1

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), stretch (lts), stretch4.9.320-2fixed
buster4.19.235-1fixed
buster (security)4.19.249-2fixed
bullseye5.10.127-1fixed
bullseye (security)5.10.127-2fixed
bookworm5.18.14-1fixed
sid5.18.16-1fixed
linux-4.19 (PTS)stretch (security)4.19.232-1~deb9u1fixed
stretch (lts), stretch4.19.249-2~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch(not affected)
linuxsourcebuster4.19.208-1
linuxsourcebullseye5.10.46-5DSA-4978-1
linuxsource(unstable)5.14.6-1
linux-4.19sourcestretch4.19.208-1~deb9u1DLA-2785-1

Notes

[stretch] - linux <not-affected> (Vulnerable code introduced later)
https://lists.openwall.net/netdev/2021/08/17/124
https://git.kernel.org/linus/7e78c597c3ebfd0cb329aa09a838734147e4f117

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