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HIGHCVE-2026-43126Published Modified CNA Linux

CVE-2026-43126: ALSA: mixer: oss: Add card disconnect checkpoints

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.

Metrics

CVSS v3.1
7.8
Severity
HIGH
Fixed in
0
Affected Products
2

Fix available

0084d5d44418148662365eced3e126ad1a81ee3e26.12.756.18.166.19.67.08c097cf736993454acf3f711a3b376d6c7ad8965ae583f113d15fa97e5234133c20d09f8e6214e47e6645e625480cdf1079a4265f758d13b70721029
Affected packages
  • Linux / Linux
    < ae583f113d15fa97e5234133c20d09f8e6214e47 (from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2) · < e6645e625480cdf1079a4265f758d13b70721029 (from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2) · < 8c097cf736993454acf3f711a3b376d6c7ad8965 (from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2) · < 084d5d44418148662365eced3e126ad1a81ee3e2 (from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2)
  • Linux / Linux
    2.6.12
    Fixed in 0, 6.12.75, 6.18.16, 6.19.6, 7.0
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References