SB20260816460 - Improper Check or Handling of Exceptional Conditions in Linux kernel cpuhp_invoke_callback()
Published: August 16, 2026
Security Bulletin ID
SB20260816460
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-72067)
CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions
CVSSv4: 6.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper error handling in cpuhp_invoke_callback() when unwinding earlier callbacks for the same hotplug state after an instance callback failure. A local user can trigger a CPU hotplug state transition failure to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/673db10729fb121ea1b16fe57791a0cb9eac1eb5
- https://git.kernel.org/stable/c/77d4fa8a3ea1c3e8b996ac35e59aee9e77389905
- https://git.kernel.org/stable/c/7a68257b90d8a9b6d605abc99469ded45ecba63b
- https://git.kernel.org/stable/c/95232281512b15338549171ed9a2acf21f946ffb
- https://git.kernel.org/stable/c/9f7dc355f62c011e4afe8286cf71130d4bfb9d80
- https://git.kernel.org/stable/c/ef39758637cc5b603fb05b625c45a98aa306e338
- https://git.kernel.org/stable/c/f77117530fc3f5932ffb107182a6dd34006be9b6
- https://git.kernel.org/stable/c/fe9c8d641f6991614d1229a3ffd3e33b879bba9c