CVE-2023-52736

Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52736
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52736.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-52736
Downstream
Related
Published
2024-05-21T16:15:13Z
Modified
2025-08-09T20:01:28Z
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

Affected packages