Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-31518
Published: April 24, 2026
Vulnerability identifier: #VU127628
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-2026-31518
CWE-ID: CWE-772
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 improper resource management in esp_output_tail_tcp when handling a full espintcp TX queue with asynchronous crypto. A local user can trigger packet processing errors to cause a denial of service.
The issue occurs when asynchronous crypto is used instead of synchronous crypto.
How to mitigate CVE-2026-31518
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2
- https://git.kernel.org/stable/c/41aafca57de4a4c026701622bd4648f112a9edcd
- https://git.kernel.org/stable/c/4820847e036ff1035b01b69ad68dfc17e7028fe9
- https://git.kernel.org/stable/c/6a3ec6efbc4f90e0ccb2e71574f07351f19996f4
- https://git.kernel.org/stable/c/6aa9841d917532d0f2d932d1ff2f3a94305aaf47
- https://git.kernel.org/stable/c/88d386243ed374ac969dabd3bbc1409a31d81818
- https://git.kernel.org/stable/c/aca3ad0c262f54a5b5c95dda80a48365997d1224
- https://git.kernel.org/stable/c/df6f995358dc1f3c42484f5cfe241d7bd3e1cd15