SB2026050867 - Improper locking in Linux kernel sunrpc xprtrdma

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Main Vulnerability Database SB2026050867

SB2026050867 - Improper locking in Linux kernel sunrpc xprtrdma

Published: May 8, 2026

Security Bulletin ID SB2026050867
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper locking (CVE-ID: CVE-2026-43469)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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 improper state management in the xprtrdma receive handling logic when exiting early from receive work request posting. A local user can trigger memory pressure conditions to cause a denial of service.

The issue can cause the system to hang because the re_receiving counter is not decremented on certain early exit paths, preventing completion during transport drain.


Remediation

Install update from vendor's website.

References