Improper access control in Linux kernel - CVE-2026-46302
Published: June 10, 2026
Vulnerability identifier: #VU134200
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-46302
CWE-ID: CWE-284
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 access control in /sys/fs/selinux/policy when handling concurrent opens of the policy file. A local user can open the policy file and keep it open to cause a denial of service.
The issue can prevent other processes from reading the kernel policy.
How to mitigate CVE-2026-46302
Install security update from vendor's repository.