Race condition in Linux kernel - CVE-2026-72116

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Main Vulnerability Database Vulnerabilities #VU143472

Race condition in Linux kernel - CVE-2026-72116

Published: August 16, 2026


Vulnerability identifier: #VU143472
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-72116
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

Linux kernel
Ubuntu
linux-nvidia (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)

How to mitigate CVE-2026-72116

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia (Ubuntu package) - addressed in versions 5.15.0-1112.113, 5.15.0.1112.112
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1

External References

Related Security Bulletins