Use-after-free in Linux kernel - CVE-2026-63906
Published: July 20, 2026
Vulnerability identifier: #VU138742
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-63906
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in omap2430_probe() in the omap2430 USB driver when handling a crafted platform device state. A local user can trigger the vulnerable code path to cause a denial of service.
The issue occurs because a device tree node reference is released before its last access in both the success and error paths.
How to mitigate CVE-2026-63906
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/27e62532228dc42367bb43ebbcd7bf49d8db2b0d
- https://git.kernel.org/stable/c/632fd888fe33083927e29ef651ac1aba345edd9e
- https://git.kernel.org/stable/c/69f9f2b30af03d9b6e83f78fb0f734b6066d4678
- https://git.kernel.org/stable/c/b987f380620b38c84f054d5ff5c05861a7c2203b
- https://git.kernel.org/stable/c/d53e4c41331f57b9fd78cbf3e480c6ce20aea07b
- https://git.kernel.org/stable/c/e194ce048f5a6c549b3a23a8c568c6470f40f772