CVE-2026-43126 Details
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.
A vulnerability in the ALSA OSS mixer layer of the Linux kernel has been addressed by adding checkpoints to handle card disconnections. Previously, the mixer layer processed control operations individually, which could lead to unhandled calls when a device was disconnected, creating potential use-after-free scenarios. The recent update introduces sanity checks at each entry point of OSS mixer access to ensure proper handling of disconnected devices. This vulnerability affects the Linux kernel stable tree.
Users can update to the latest version of the Linux kernel stable tree, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/084d5d44418148662365eced3e126ad1a81ee3e2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8c097cf736993454acf3f711a3b376d6c7ad8965 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ae583f113d15fa97e5234133c20d09f8e6214e47 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e6645e625480cdf1079a4265f758d13b70721029 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 2.6.12, < 6.12.75 >= 6.13, < 6.18.16 >= 6.19, < 6.19.6 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | CVE Modified | kernel.org |
| May 6, 2026 | New CVE Received | kernel.org |