CVE-2026-43126
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Modified
Affected
- Linux Kernel < 6.12.75
- Linux Kernel < 6.18.16
- Linux Kernel < 6.19.6
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-43126.md and follow it. Check whether this project is affected by CVE-2026-43126. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/084d5d44418148662365eced3e126ad1a81ee3e2
- https://git.kernel.org/stable/c/8c097cf736993454acf3f711a3b376d6c7ad8965
- https://git.kernel.org/stable/c/ae583f113d15fa97e5234133c20d09f8e6214e47
- https://git.kernel.org/stable/c/e6645e625480cdf1079a4265f758d13b70721029
References
- https://git.kernel.org/stable/c/084d5d44418148662365eced3e126ad1a81ee3e2
- https://git.kernel.org/stable/c/11ecfba92bdb420456a48da45a756b24d6356f72
- https://git.kernel.org/stable/c/20c52a70414095447da1be076f492cc7a6dce7cf
- https://git.kernel.org/stable/c/8c097cf736993454acf3f711a3b376d6c7ad8965
- https://git.kernel.org/stable/c/ae583f113d15fa97e5234133c20d09f8e6214e47
- https://git.kernel.org/stable/c/e6645e625480cdf1079a4265f758d13b70721029