Improper resource shutdown or release in Linux kernel - CVE-2026-46320
Published: June 10, 2026
Vulnerability identifier: #VU134180
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-2026-46320
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 tap_get_user_xdp() when processing XDP frames. A local user can send a crafted short frame or trigger skb allocation failure to cause a denial of service.
Each rejected frame in a batch leaks one page-frag chunk.
How to mitigate CVE-2026-46320
Install security update from vendor's repository.