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CVE-2026-43126

ALSA: mixer: oss: Add card disconnect checkpoints

HIGH
7.8
CVSS Score
Published: May 6, 2026 at 11:27 AM UTC
Updated: October 30, 2026 at 01:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
2.6.12 ≤ v < 6.12.756.13 ≤ v < 6.18.166.19 ≤ v < 6.19.61da177e4c3f41524e886b7f1b8a0c1fc7321cac22.6.12
Vendor states this is fixed in 084d5d44418148662365eced3e126ad1a81ee3e2 (fixed)
Vendor states this is fixed in 8c097cf736993454acf3f711a3b376d6c7ad8965 (fixed)
Vendor states this is fixed in ae583f113d15fa97e5234133c20d09f8e6214e47 (fixed)
Vendor states this is fixed in e6645e625480cdf1079a4265f758d13b70721029 (fixed)
Vendor states this is fixed in 2.6.12 (unaffected)
Vendor states this is fixed in 6.12.75 (unaffected)
Vendor states this is fixed in 6.18.16 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

References (6)

Patch
Source: cverecord
https://git.kernel.org/stable/c/ae583f113d15fa97e5234133c20d09f8e6214e47
Patch
Source: cverecord
https://git.kernel.org/stable/c/e6645e625480cdf1079a4265f758d13b70721029
Patch
Source: cverecord
https://git.kernel.org/stable/c/8c097cf736993454acf3f711a3b376d6c7ad8965
Patch
Source: cverecord
https://git.kernel.org/stable/c/084d5d44418148662365eced3e126ad1a81ee3e2
Source: cverecord
https://git.kernel.org/stable/c/20c52a70414095447da1be076f492cc7a6dce7cf
Source: cverecord
https://git.kernel.org/stable/c/11ecfba92bdb420456a48da45a756b24d6356f72

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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