SB2026052872 - Improper resource shutdown or release in Linux kernel endpoint functions driver
Published: May 28, 2026
Security Bulletin ID
SB2026052872
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 resource shutdown or release (CVE-ID: CVE-2026-46009)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in the pci-epf-ntb endpoint function driver when handling link setup or teardown operations. A local user can trigger .allow_link failure or .drop_link handling to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3446beddba450c8d6f9aca2f028712ac527fead3
- https://git.kernel.org/stable/c/65fc57c8b8f0b31be62be291cb1bb01755cec85d
- https://git.kernel.org/stable/c/72099f015d3c77bf2eb703d1aab113bd7a60915a
- https://git.kernel.org/stable/c/756ca5e7ed22d9045bb4de4c981f9149278d5cd3
- https://git.kernel.org/stable/c/e813c95e4c8edd31599081e6356e20ada30e266d