CVE-2026-46302selinux: allow multiple opens of /sys/fs/selinux/policy
- 5.5MediumCVSS base score
- 0.11%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 26 days later
· 26 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.11% · top 98% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected cee74f47a6baba0ac457e87687fdcf0abd599f0a – < 9795810d116bc9071485929ba6471dc8d5bd158b
- affected cee74f47a6baba0ac457e87687fdcf0abd599f0a – < d8cafd0226d5df682d1f4ea978a4318fe3a11210
- affected cee74f47a6baba0ac457e87687fdcf0abd599f0a – < 0ed712134a3db0075bfe9a0f8536c48728ec745e
- affected cee74f47a6baba0ac457e87687fdcf0abd599f0a – < c24d2e190b955baf3a95e05d34b192f61bd201b3
- affected cee74f47a6baba0ac457e87687fdcf0abd599f0a – < 714362f3779dfa453a78ced32396a72726962a41
- affected cee74f47a6baba0ac457e87687fdcf0abd599f0a – < a02cd6805562305f936e807da83e253b719dd965
- affected 2.6.37
- unaffected < 2.6.37
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.58 – ≤ 6.18.*
- unaffected 7.0.7 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References6
- https://git.kernel.org/stable/c/9795810d116bc9071485929ba6471dc8d5bd158b (opens in a new tab)
- https://git.kernel.org/stable/c/d8cafd0226d5df682d1f4ea978a4318fe3a11210 (opens in a new tab)
- https://git.kernel.org/stable/c/0ed712134a3db0075bfe9a0f8536c48728ec745e (opens in a new tab)
- https://git.kernel.org/stable/c/c24d2e190b955baf3a95e05d34b192f61bd201b3 (opens in a new tab)
- https://git.kernel.org/stable/c/714362f3779dfa453a78ced32396a72726962a41 (opens in a new tab)
- https://git.kernel.org/stable/c/a02cd6805562305f936e807da83e253b719dd965 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-35167 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46302)Record last updated .