CVE-2023-52736
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.
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/427ca2530da8dc61a42620d7113b05e187b6c2c0Patch
- https://git.kernel.org/stable/c/7fc4e7191eae9d9325511e03deadfdb2224914f8Patch
- https://git.kernel.org/stable/c/87978e6ad45a16835cc58234451111091be3c59aPatch
- https://git.kernel.org/stable/c/e909f5f2aa55a8f9aa6919cce08015cb0e8d4668Patch
- https://git.kernel.org/stable/c/427ca2530da8dc61a42620d7113b05e187b6c2c0Patch
- https://git.kernel.org/stable/c/7fc4e7191eae9d9325511e03deadfdb2224914f8Patch
- https://git.kernel.org/stable/c/87978e6ad45a16835cc58234451111091be3c59aPatch
- https://git.kernel.org/stable/c/e909f5f2aa55a8f9aa6919cce08015cb0e8d4668Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.