High 7.8Published Jul 19, 2026

CVE-2026-64001ALSA: pcm: oss: Fix setup list UAF on proc write error

Updated under an hour ago (Oct 29, 2026, 12:23 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix setup list UAF on proc write error snd_pcm_oss_proc_write() links a newly allocated setup entry into the OSS setup list before duplicating the task name. If the task-name allocation fails, the error path frees the already linked entry and leaves setup_list pointing at freed memory. A later OSS device open can then walk the stale list entry in snd_pcm_oss_look_for_setup() and dereference freed memory. Allocate the task name and initialize the setup entry before publishing the entry on setup_list. Also fetch the initial proc read iterator only after taking setup_mutex, so all setup_list traversal follows the same list lifetime rules.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 060d77b9c04acd7aef60790398a53f731db8c8fe before d9df965284abde27ba6bfbdfc8407697cf6802f1; 060d77b9c04acd7aef60790398a53f731db8c8fe builds before 8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce; from 060d77b9c04acd7aef60790398a53f731db8c8fe before e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c; from 060d77b9c04acd7aef60790398a53f731db8c8fe before be387230dc22d870afd0e5d35912b07c2bc323bd; 060d77b9c04acd7aef60790398a53f731db8c8fe builds before 4cc54bdd54b337e77115be5b55577d1c58608eae	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.17 before 6.12.93; from 6.13 before 6.18.35; from 6.19 before 7.0.12; 7.1; 7.1; 7.1; 7.1; 7.1	NVD

References

References

https://git.kernel.org/stable/c/d9df965284abde27ba6bfbdfc8407697cf6802f1
https://git.kernel.org/stable/c/8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce	patch
https://git.kernel.org/stable/c/e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c	patch
https://git.kernel.org/stable/c/be387230dc22d870afd0e5d35912b07c2bc323bd	patch
https://git.kernel.org/stable/c/4cc54bdd54b337e77115be5b55577d1c58608eae	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.