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 singl…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 2.6.37 before 7.0.7 Version 7.1 |
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/0ed712134a3db0075bfe9a0f8536c48728ec745e
- https://git.kernel.org/stable/c/714362f3779dfa453a78ced32396a72726962a41
- https://git.kernel.org/stable/c/9795810d116bc9071485929ba6471dc8d5bd158b
- https://git.kernel.org/stable/c/a02cd6805562305f936e807da83e253b719dd965
- https://git.kernel.org/stable/c/c24d2e190b955baf3a95e05d34b192f61bd201b3
- https://git.kernel.org/stable/c/d8cafd0226d5df682d1f4ea978a4318fe3a11210