CVE-2025-71192

Name	CVE-2025-71192
Description	In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: fix a double free in snd_ac97_controller_register() If ac97_add_adapter() fails, put_device() is the correct way to drop the device reference. kfree() is not required. Add kfree() if idr_alloc() fails and in ac97_adapter_release() to do the cleanup. Found by code review.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4476-1, DSA-6126-1, DSA-6127-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	vulnerable
	bullseye (security)	5.10.249-1	vulnerable
	bookworm	6.1.159-1	vulnerable
	bookworm (security)	6.1.162-1	fixed
	trixie	6.12.63-1	vulnerable
	trixie (security)	6.12.73-1	fixed
	forky, sid	6.18.12-1	fixed
linux-6.1 (PTS)	bullseye (security)	6.1.162-1~deb11u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bookworm	6.1.162-1	DSA-6127-1
linux	source	trixie	6.12.69-1	DSA-6126-1
linux	source	(unstable)	6.18.8-1
linux-6.1	source	bullseye	6.1.162-1~deb11u1	DLA-4476-1

https://git.kernel.org/linus/830988b6cf197e6dcffdfe2008c5738e6c6c3c0f (6.19-rc5)