CVE-2026-46302selinux: allow multiple opens of /sys/fs/selinux/policy
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from cee74f47a6baba0ac457e87687fdcf0abd599f0a before d8cafd0226d5df682d1f4ea978a4318fe3a11210; from cee74f47a6baba0ac457e87687fdcf0abd599f0a before 0ed712134a3db0075bfe9a0f8536c48728ec745e; from cee74f47a6baba0ac457e87687fdcf0abd599f0a before c24d2e190b955baf3a95e05d34b192f61bd201b3; from cee74f47a6baba0ac457e87687fdcf0abd599f0a before 714362f3779dfa453a78ced32396a72726962a41; from cee74f47a6baba0ac457e87687fdcf0abd599f0a before a02cd6805562305f936e807da83e253b719dd965 | CNA record |
linux linux_kernel linux:linux_kernel | from 2.6.37 before 7.0.7; 7.1; 7.1 | NVD |
References
- https://git.kernel.org/stable/c/d8cafd0226d5df682d1f4ea978a4318fe3a11210
- https://git.kernel.org/stable/c/0ed712134a3db0075bfe9a0f8536c48728ec745e
- https://git.kernel.org/stable/c/c24d2e190b955baf3a95e05d34b192f61bd201b3
- https://git.kernel.org/stable/c/714362f3779dfa453a78ced32396a72726962a41patch
- https://git.kernel.org/stable/c/a02cd6805562305f936e807da83e253b719dd965patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.