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 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 versions
Linux kernel versions
2.6.37
and later are affected. Fixed in
7.0.7,
7.1-rc3
and their respective stable series.
References
The following references provide additional information about CVE-2026-46302 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/714362f3779dfa453a78ced32396a72726962a41
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PatchKernel patch commithttps://git.kernel.org/stable/c/a02cd6805562305f936e807da83e253b719dd965
Frequently asked questions
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What is CVE-2026-46302?
CVE-2026-46302 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.37 onward and has been patched in 7.0.7 and 7.1-rc3. CVE-2026-46302 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46302?
Yes — CVE-2026-46302 has been patched. Fixed versions include 7.0.7 and 7.1-rc3. If you are running Linux kernel 2.6.37 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46302 actively exploited?
No — CVE-2026-46302 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.