SB2026052879 - Information disclosure in Linux kernel rxrpc

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Main Vulnerability Database SB2026052879

SB2026052879 - Information disclosure in Linux kernel rxrpc

Published: May 28, 2026

Security Bulletin ID SB2026052879
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) Information disclosure (CVE-ID: CVE-2026-46000)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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 improper handling of shared packet buffers in RxRPC conn-level packet handling when processing RESPONSE packets. A local user can observe decrypted packet contents through a packet sniffer to disclose sensitive information.

The issue occurs when the sk_buff containing a RESPONSE packet is cloned and shared with a packet sniffer.


Remediation

Install update from vendor's website.

References