| Name | CVE-2022-48735 |
| Description | In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix UAF of leds class devs at unbinding The LED class devices that are created by HD-audio codec drivers are registered via devm_led_classdev_register() and associated with the HD-audio codec device. Unfortunately, it turned out that the devres release doesn't work for this case; namely, since the codec resource release happens before the devm call chain, it triggers a NULL dereference or a UAF for a stale set_brightness_delay callback. For fixing the bug, this patch changes the LED class device register and unregister in a manual manner without devres, keeping the instances in hda_gen_spec. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | buster | 4.19.249-2 | vulnerable |
| buster (security) | 4.19.316-1 | vulnerable | |
| bullseye (security), bullseye | 5.10.218-1 | fixed | |
| bookworm | 6.1.94-1 | fixed | |
| bookworm (security) | 6.1.90-1 | fixed | |
| trixie | 6.8.12-1 | fixed | |
| sid | 6.9.7-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | bullseye | 5.10.103-1 | |||
| linux | source | (unstable) | 5.16.10-1 |
https://git.kernel.org/linus/549f8ffc7b2f7561bea7f90930b6c5104318e87b (5.17-rc3)