CVE-2025-21944

Name	CVE-2025-21944
Description	In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix bug on trap in smb2_lock If lock count is greater than 1, flags could be old value. It should be checked with flags of smb_lock, not flags. It will cause bug-on trap from locks_free_lock in error handling routine.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-5900-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	fixed
	bullseye (security)	5.10.234-1	fixed
	bookworm	6.1.129-1	vulnerable
	bookworm (security)	6.1.135-1	fixed
	trixie	6.12.22-1	fixed
	sid	6.12.25-1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bullseye	(not affected)
linux	source	bookworm	6.1.133-1	DSA-5900-1
linux	source	(unstable)	6.12.19-1

[bullseye] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/e26e2d2e15daf1ab33e0135caf2304a0cfa2744b (6.14-rc6)