CVE-2026-46302 is a vulnerability in Linux Kernel
Published on June 8, 2026
selinux: allow multiple opens of /sys/fs/selinux/policy
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.
Products Associated with CVE-2026-46302
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Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 714362f3779dfa453a78ced32396a72726962a41 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below a02cd6805562305f936e807da83e253b719dd965 is affected.
- Before 7.0.7 is affected.
- Version 7.0.7, <= 7.0.* is unaffected.
- Version 7.1-rc3, <= * is unaffected.