CVE-2026-46302

In the Linux kernel, the following vulnerability has been resolved: selinux: allow multiple opens of /sys/fs/selinux/policy Currently there can only be a single open of /sys/fs/selinux/policy at any time. This allows any process to block any other process from reading the kernel policy. The original motivation seems to have been a mix of preventing an inconsistent view of the policy size and preventing userspace from allocating kernel memory without bound, but this is arguably equally bad. Eliminate the policy_opened flag and shrink the critical section that the policy mutex is held. While we are making changes here, drop a couple of extraneous BUG_ONs.

Affected products

Linux Kernel, Ubuntu, Opensuse Tumbleweed

Linux Linux Kernel

< 7.0.7, 7.1

Fix

Available

CVSS 3.1

5.5 MEDIUM

EPSS

0.1% (1th percentile)

NVD status

Analyzed

Published

2026-06-08

No exploit for CVE-2026-46302 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.