Use-after-free in Linux kernel - CVE-2026-53011
Published: June 25, 2026
Vulnerability identifier: #VU135354
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-2026-53011
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 advance_sched() in the taprio scheduler when switching schedules. A local user can trigger a schedule switch to cause a denial of service.
How to mitigate CVE-2026-53011
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0e62171df8ed4804d00db088f17eed06468233fa
- https://git.kernel.org/stable/c/105425b1969c5affe532713cfac1c0b320d7ac2b
- https://git.kernel.org/stable/c/1bd286fa3e21200133478ed523cc6a2788baf38a
- https://git.kernel.org/stable/c/3471874578160a28c171a607fa069f24062634b8
- https://git.kernel.org/stable/c/7256996e1ef553716817f3bfd077c2f3b48b582f
- https://git.kernel.org/stable/c/a8fc396519ef4f081bc545e88f61241728bb78d7
- https://git.kernel.org/stable/c/b73235da5dde77ed1264f9767b62c28c9d71fd78
- https://git.kernel.org/stable/c/eee072fe16c646190d33ae69c9983d8de1562bf8