SB2026061040 - Improper access control in Linux kernel selinux
Published: June 10, 2026
Security Bulletin ID
SB2026061040
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 access control (CVE-ID: CVE-2026-46302)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 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
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.
Remediation
Install update from vendor's website.