CVE-2022-48735 (GCVE-0-2022-48735)
Vulnerability from cvelistv5
Published
2024-06-20 11:13
Modified
2026-08-05 08:52
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 15509b6344726de22bdbfff88b65341dd0dd33af
Version: 15509b6344726de22bdbfff88b65341dd0dd33af
Version: 15509b6344726de22bdbfff88b65341dd0dd33af
Version: 15509b6344726de22bdbfff88b65341dd0dd33af
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