SB2026082454 - Improper resource shutdown or release in Linux kernel devlink
Published: August 24, 2026
Security Bulletin ID
SB2026082454
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper resource shutdown or release (CVE-ID: CVE-2026-74718)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in devlink_nl_reload_doit() when handling a devlink reload request that targets a different network namespace with an action other than DRIVER_REINIT. A local user can send a specially crafted devlink reload request to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1c4dac9bf1d2ac31da63b794bdec697777cbd0fd
- https://git.kernel.org/stable/c/7b02c6d2a3cd2cd669f5c16685779f84328ae60c
- https://git.kernel.org/stable/c/7b6552e53426ea0539c667bbc5a524fdf7feae6f
- https://git.kernel.org/stable/c/bf0797b92be591ac71d7c0f610e695caca3c72c9
- https://git.kernel.org/stable/c/eda60c85b4f4c7d66b7141a5fe020b1a7f395341