CVE-2026-46302 (GCVE-0-2026-46302)

Vulnerability from cvelistv5 – Published: 2026-06-08 15:46 – Updated: 2026-06-14 18:07
VLAI
Title
selinux: allow multiple opens of /sys/fs/selinux/policy
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cee74f47a6baba0ac457e87687fdcf0abd599f0a , < 714362f3779dfa453a78ced32396a72726962a41 (git)
Affected: cee74f47a6baba0ac457e87687fdcf0abd599f0a , < a02cd6805562305f936e807da83e253b719dd965 (git)
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Linux Linux Affected: 2.6.37
Unaffected: 0 , < 2.6.37 (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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