SB2026050999 - Deadlock in Linux kernel octeontx2 af driver

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Main Vulnerability Database SB2026050999

SB2026050999 - Deadlock in Linux kernel octeontx2 af driver

Published: May 9, 2026

Security Bulletin ID SB2026050999
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) Deadlock (CVE-ID: CVE-2026-43296)

CWE-ID: CWE-833 - Deadlock

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 a hardware-induced deadlock condition in the octeontx2-af NIX SQ manager and PSE handling logic when multiple send queues share an SMQ and transmit concurrently or when sticky and non-sticky transmissions transition. A local user can trigger concurrent transmissions to cause a denial of service.

The issue can also manifest as loss of forward progress under load with credit loss.


Remediation

Install update from vendor's website.

References