SB2026090435 - Improper Check for Unusual or Exceptional Conditions in Linux kernel core

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026090435

SB2026090435 - Improper Check for Unusual or Exceptional Conditions in Linux kernel core

Published: September 4, 2026

Security Bulletin ID SB2026090435
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) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-80733)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

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


The vulnerability allows a local user to trigger a kernel warning.

The vulnerability exists due to improper handling of unsupported socket families in sk_mc_loop() when sending packets through an AF_PACKET socket over a virtual device. A local user can send packets through a raw or packet socket to trigger a kernel warning.

The issue affects non-INET sockets, including AF_PACKET sockets used with virtual devices such as VRF or ipvlan.


Remediation

Install update from vendor's website.

References