SB20260918433 - Race condition in Linux kernel sunrpc

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Main Vulnerability Database SB20260918433

SB20260918433 - Race condition in Linux kernel sunrpc

Published: September 18, 2026

Security Bulletin ID SB20260918433
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-90235)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to trigger invocation of stale socket callbacks.

The vulnerability exists due to improper synchronization in SUNRPC xprtsock socket callback handling when concurrent socket callback handling occurs during teardown. A remote attacker can race callback processing with socket teardown to trigger invocation of stale socket callbacks.

The issue applies when SUNRPC takes over AF_LOCAL, UDP, or TCP sockets.


Remediation

Install update from vendor's website.

References