SB20260720209 - Memory corruption in Linux kernel rxrpc

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Main Vulnerability Database SB20260720209

SB20260720209 - Memory corruption in Linux kernel rxrpc

Published: July 20, 2026

Security Bulletin ID SB20260720209
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory corruption (CVE-ID: CVE-2026-64026)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause pagecache corruption.

The vulnerability exists due to memory corruption in the Linux kernel RxRPC recvmsg handling when decrypting locally transmitted DATA packets processed through splice(). A local user can trigger crafted local packet handling to cause pagecache corruption.

The issue affects in-place decryption of shared packet data, and MSG_PEEK may influence which packet is decrypted and require re-decryption during subsequent recvmsg() processing.


Remediation

Install update from vendor's website.

References