CVE-2021-33034

NameCVE-2021-33034
DescriptionIn the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2689-1, DLA-2690-1, ELA-458-1

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)4.9.320-2fixed
stretch (lts), stretch4.9.320-3fixed
buster4.19.249-2fixed
buster (security)4.19.316-1fixed
bullseye5.10.218-1fixed
bullseye (security)5.10.221-1fixed
bookworm6.1.94-1fixed
bookworm (security)6.1.99-1fixed
trixie6.9.8-1fixed
sid6.9.9-1fixed
linux-4.19 (PTS)stretch (security)4.19.232-1~deb9u1fixed
stretch (lts), stretch4.19.316-1~deb9u1fixed
linux-4.9 (PTS)jessie, jessie (lts)4.9.303-1~deb8u3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch4.9.272-1DLA-2689-1
linuxsourcebuster4.19.194-1
linuxsource(unstable)5.10.38-1
linux-4.19sourcestretch4.19.194-1~deb9u1DLA-2690-1
linux-4.9sourcejessie4.9.272-1~deb8u2ELA-458-1

Notes

https://git.kernel.org/linus/5c4c8c9544099bb9043a10a5318130a943e32fc3

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