Improper resource shutdown or release in Linux kernel - CVE-2026-46009
Published: May 28, 2026
Vulnerability identifier: #VU132485
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-46009
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2026-46009
Install security update from vendor's repository.
Sources
- 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