CVE-2023-52736
ALSA: hda: Do not unset preset when cleaning up codec
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 9a6246ff78ac33af78f82704cde6fec361597eea – < 7fc4e7191eae9d9325511e03deadfdb2224914f8
- affected 9a6246ff78ac33af78f82704cde6fec361597eea – < e909f5f2aa55a8f9aa6919cce08015cb0e8d4668
- affected 9a6246ff78ac33af78f82704cde6fec361597eea – < 427ca2530da8dc61a42620d7113b05e187b6c2c0
- affected 9a6246ff78ac33af78f82704cde6fec361597eea – < 87978e6ad45a16835cc58234451111091be3c59a
- affected 4.1
- unaffected < 4.1
- unaffected 5.10.169 – ≤ 5.10.*
- unaffected 5.15.95 – ≤ 5.15.*
- unaffected 6.1.13 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (4)
- https://git.kernel.org/stable/c/7fc4e7191eae9d9325511e03deadfdb2224914f8 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e909f5f2aa55a8f9aa6919cce08015cb0e8d4668 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/427ca2530da8dc61a42620d7113b05e187b6c2c0 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/87978e6ad45a16835cc58234451111091be3c59a (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-52736)Record last updated .