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 products
linux: linux kernel
References6
- git.kernel.org/stable/c/084d5d44418148662365eced3e126ad1a81ee3e2 Patch
- git.kernel.org/stable/c/8c097cf736993454acf3f711a3b376d6c7ad8965 Patch
- git.kernel.org/stable/c/ae583f113d15fa97e5234133c20d09f8e6214e47 Patch
- git.kernel.org/stable/c/e6645e625480cdf1079a4265f758d13b70721029 Patch
- git.kernel.org/stable/c/11ecfba92bdb420456a48da45a756b24d6356f72
- git.kernel.org/stable/c/20c52a70414095447da1be076f492cc7a6dce7cf
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 13 November 2026
Could this be exploited in your environment?
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