CVE-2025-38105

NameCVE-2025-38105
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Kill timer properly at removal The USB-audio MIDI code initializes the timer, but in a rare case, the driver might be freed without the disconnect call. This leaves the timer in an active state while the assigned object is released via snd_usbmidi_free(), which ends up with a kernel warning when the debug configuration is enabled, as spotted by fuzzer. For avoiding the problem, put timer_shutdown_sync() at snd_usbmidi_free(), so that the timer can be killed properly. While we're at it, replace the existing timer_delete_sync() at the disconnect callback with timer_shutdown_sync(), too.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4561-1, DSA-6243-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye5.10.223-1vulnerable
bullseye (security)5.10.251-5vulnerable
bookworm6.1.170-3fixed
bookworm (security)6.1.172-1fixed
trixie6.12.86-1fixed
trixie (security)6.12.88-1fixed
sid, forky7.0.7-1fixed
linux-6.1 (PTS)bullseye (security)6.1.172-1~deb11u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebookworm6.1.170-1DSA-6243-1
linuxsourcetrixie6.12.57-1
linuxsource(unstable)6.16.3-1
linux-6.1sourcebullseye6.1.170-1~deb11u1DLA-4561-1

Notes

https://git.kernel.org/linus/0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1 (6.16-rc1)

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