CVE-2023-31081

NameCVE-2023-31081
DescriptionAn issue was discovered in drivers/media/test-drivers/vidtv/vidtv_bridge.c in the Linux kernel 6.2. There is a NULL pointer dereference in vidtv_mux_stop_thread. In vidtv_stop_streaming, after dvb->mux=NULL occurs, it executes vidtv_mux_stop_thread(dvb->mux).
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)buster4.19.249-2fixed
buster (security)4.19.304-1fixed
bullseye5.10.209-2vulnerable
bullseye (security)5.10.205-2vulnerable
bookworm6.1.76-1vulnerable
bookworm (security)6.1.69-1vulnerable
sid, trixie6.6.15-2vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebuster(not affected)
linuxsource(unstable)(unfixed)unimportant

Notes

[buster] - linux <not-affected> (Vulnerable code not present)
https://lore.kernel.org/all/CA+UBctDXyiosaiR7YNKCs8k0aWu4gU+YutRcnC+TDJkXpHjQag@mail.gmail.com/
CONFIG_DVB_VIDTV (vidtv driver) not enabled in Debian official configuration

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