SB20260816408 - Race condition in Linux kernel can

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Main Vulnerability Database SB20260816408

SB20260816408 - Race condition in Linux kernel can

Published: August 16, 2026

Security Bulletin ID SB20260816408
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) Race condition (CVE-ID: CVE-2026-72116)

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

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper state management in the net/can/bcm.c CAN broadcast manager rx_ops handling when an RX_SETUP update races with device unregistration. A local user can perform an RX_SETUP update during concurrent device removal to cause a denial of service.

Frame delivery for the updated filter may silently stop for the affected ifindex. This does not apply to rx_ops using ifindex 0 for all CAN devices.


Remediation

Install update from vendor's website.

References