SB20260625221 - Memory leak in Linux kernel tls

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Main Vulnerability Database SB20260625221

SB20260625221 - Memory leak in Linux kernel tls

Published: June 25, 2026

Security Bulletin ID SB20260625221
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory leak (CVE-ID: CVE-2026-52974)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 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


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.


Remediation

Install update from vendor's website.

References