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
- 2025-07-01T14:22:39.823733Z
- 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
-
- https://git.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47
- https://git.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87b
- https://git.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8
- https://git.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5
- https://security-tracker.debian.org/tracker/CVE-2022-48735
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.10.103-1
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source