CVE-2026-46302
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-06-08
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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 Software (10)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | cee74f47a6baba0ac457e87687fdcf0abd599f0a < 9795810d116bc9071485929ba6471dc8d5bd158b |
| Linux | Linux | cee74f47a6baba0ac457e87687fdcf0abd599f0a < d8cafd0226d5df682d1f4ea978a4318fe3a11210 |
| Linux | Linux | cee74f47a6baba0ac457e87687fdcf0abd599f0a < 0ed712134a3db0075bfe9a0f8536c48728ec745e |
| Linux | Linux | cee74f47a6baba0ac457e87687fdcf0abd599f0a < c24d2e190b955baf3a95e05d34b192f61bd201b3 |
| Linux | Linux | cee74f47a6baba0ac457e87687fdcf0abd599f0a < 714362f3779dfa453a78ced32396a72726962a41 |
| Linux | Linux | cee74f47a6baba0ac457e87687fdcf0abd599f0a < a02cd6805562305f936e807da83e253b719dd965 |
| Linux | Linux | 2.6.37 |
| linux | linux_kernel | 2.6.37 – 7.0.7 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |