CVE-2022-48735
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48735
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48735.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-48735
- Downstream
- Related
- Published
- 2024-06-20T12:15:11Z
- Modified
- 2025-08-09T20:01:28Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 devmledclassdevregister() 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 setbrightness_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 hdagenspec.
- References