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.