Description
In 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.
Product status
c88469704d63787e8d44ca5ea1c1bd0adc29572d (git) before 647410a7da46067953a53c0d03f8680eff570959
c88469704d63787e8d44ca5ea1c1bd0adc29572d (git) before c611b9e55174e439dcd85a72969b43a95f3827a4
c88469704d63787e8d44ca5ea1c1bd0adc29572d (git) before 62066758d2ae169278e5d6aea5995b1b6f6ddeb5
c88469704d63787e8d44ca5ea1c1bd0adc29572d (git) before 0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1
2.6.14
Any version before 2.6.14
6.6.111 (semver)
6.12.52 (semver)
6.15.3 (semver)
6.16 (original_commit_for_fix)
References
git.kernel.org/...c/647410a7da46067953a53c0d03f8680eff570959
git.kernel.org/...c/c611b9e55174e439dcd85a72969b43a95f3827a4
git.kernel.org/...c/62066758d2ae169278e5d6aea5995b1b6f6ddeb5
git.kernel.org/...c/0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1