CVE-2023-52736

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

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 hda_codec_driver_probe/remove() found in sound/pci/hda/hda_bind.c with their component->probe/remove() instead.

One of the reasons for that is the expectation of snd_hda_codec_device_new() 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 snd_hda_codec_cleanup_for_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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

VendorProductVersions
LinuxLinux>= 9a6246ff78ac33af78f82704cde6fec361597eea, < 7fc4e7191eae9d9325511e03deadfdb2224914f8; >= 9a6246ff78ac33af78f82704cde6fec361597eea, < e909f5f2aa55a8f9aa6919cce08015cb0e8d4668; >= 9a6246ff78ac33af78f82704cde6fec361597eea, < 427ca2530da8dc61a42620d7113b05e187b6c2c0; >= 9a6246ff78ac33af78f82704cde6fec361597eea, < 87978e6ad45a16835cc58234451111091be3c59a
LinuxLinux4.1

References

Timeline

Published
May 21, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2023-52736: Medium severity, CVSS 5.5 | Vulnix