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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.258-1vulnerable
buster4.19.194-1fixed
buster (security)4.19.171-2vulnerable
bullseye, sid5.10.40-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebuster4.19.194-1
linuxsource(unstable)5.10.38-1

Notes

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

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