CVE-2023-52736
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-52736
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52736.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-52736
- Downstream
- Related
- Published
- 2024-05-21T16:15:13Z
- Modified
- 2025-09-23T19:01:43Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ALSA: hda: Do not unset preset when cleaning up codec
Several functions that take part in codec's initialization and removal are re-used by ASoC codec drivers implementations. Drivers mimic the behavior of hdacodecdriverprobe/remove() found in sound/pci/hda/hdabind.c with their component->probe/remove() instead.
One of the reasons for that is the expectation of sndhdacodecdevicenew() to receive a valid pointer to an instance of struct snd_card. This expectation can be met only once sound card components probing commences.
As ASoC sound card may be unbound without codec device being actually removed from the system, unsetting ->preset in sndhdacodeccleanupfor_unbind() interferes with module unload -> load scenario causing null-ptr-deref. Preset is assigned only once, during device/driver matching whereas ASoC codec driver's module reloading may occur several times throughout the lifetime of an audio stack.
- References