SB20260625258 - Out-of-bounds read in Linux kernel xfrm

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Main Vulnerability Database SB20260625258

SB20260625258 - Out-of-bounds read in Linux kernel xfrm

Published: June 25, 2026

Security Bulletin ID SB20260625258
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-52935)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in espintcp_sendmsg() when handling a new send while a previous partial send is still in progress. A local user can trigger a partial send and initiate another send to disclose sensitive information.

The issue occurs in the send path because a stale offset from a live partial-send state can remain attached to a new sk_msg.


Remediation

Install update from vendor's website.

References