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Vulnerability record · CVE-2026-43126 · published 6 May 2026

CVE-2026-43126: Linux kernel vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: ALSA: mixer: oss: Add card disconnect checkpoints ALSA OSS mixer layer calls the kcontrol ops rather individually, and pending calls might be not always caught at disconnecting the device. For avoiding the potential UAF scenarios, add sanity checks of the card disconnection at each entry point of OSS mixer accesses. The rwsem is taken just before that check, hence the rest context should be covered by that properly.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.7%
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: mixer: oss: Add card disconnect checkpoints ALSA OSS mixer layer calls the kcontrol ops rather individually, and pending calls might be not always caught at disconnecting the device. For avoiding the potential UAF scenarios, add sanity checks of the card disconnection at each entry point of OSS mixer accesses. The rwsem is taken just before that check, hence the rest context should be covered by that properly.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/084d5d44418148662365eced3e126ad1a81ee3e2 Patch
https://git.kernel.org/stable/c/8c097cf736993454acf3f711a3b376d6c7ad8965 Patch
https://git.kernel.org/stable/c/ae583f113d15fa97e5234133c20d09f8e6214e47 Patch
https://git.kernel.org/stable/c/e6645e625480cdf1079a4265f758d13b70721029 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43126), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.