Memory leak in Linux kernel - CVE-2026-52974
Published: June 25, 2026
Vulnerability identifier: #VU135411
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-52974
CWE-ID: CWE-401
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 a memory leak in the TLS RX offload setup error path when handling a failure in device offload initialization. A local user can trigger offload RX setup failure to cause a denial of service.
The issue occurs when tls_set_device_offload_rx() fails at tls_dev_add() after the strparser has been initialized and an anchor skb has been allocated.
How to mitigate CVE-2026-52974
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0c9f399b37ce22a5ed94cc51f03ed07ac7f38e32
- https://git.kernel.org/stable/c/3c405dfa9619e506e75b8e41f8b29a5b99731877
- https://git.kernel.org/stable/c/58689498ca3384851145a754dbb1d8ed1cf9fb54
- https://git.kernel.org/stable/c/688f12aa44511dd57e448eb670075c6302ad1dc1
- https://git.kernel.org/stable/c/9c54e76f8d6eb11735918777ef0e0509e089557d
- https://git.kernel.org/stable/c/bd07fe6c38b9e44ff3fc02692a53f095c5cc9afc