CVE-2021-44733

NameCVE-2021-44733
DescriptionA use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.
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)stretch4.9.228-1fixed
stretch (security)4.9.290-1fixed
buster4.19.208-1vulnerable
buster (security)4.19.194-3vulnerable
bullseye5.10.84-1vulnerable
bullseye (security)5.10.46-5vulnerable
bookworm5.15.5-2vulnerable
sid5.15.15-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch(not affected)
linuxsource(unstable)(unfixed)

Notes

[stretch] - linux <not-affected> (Vulnerable code not present)
https://bugzilla.redhat.com/show_bug.cgi?id=2030747

Search for package or bug name: Reporting problems