SB20260816402 - Race condition in Linux kernel can

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Main Vulnerability Database SB20260816402

SB20260816402 - Race condition in Linux kernel can

Published: August 16, 2026

Security Bulletin ID SB20260816402
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-72122)

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

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause the socket to match traffic from unintended CAN interfaces.

The vulnerability exists due to a race condition in bcm_sendmsg() in net/can/bcm.c when processing CAN BCM socket operations concurrently with device unregistration or concurrent socket binding. A local user can trigger concurrent operations on a shared socket to cause the socket to match traffic from unintended CAN interfaces.

Exploitation requires a race with concurrent bcm_notify() or bcm_connect() updates to the socket state.


Remediation

Install update from vendor's website.

References