CVE-2026-46302 (GCVE-0-2026-46302)
Vulnerability from cvelistv5
Published
2026-06-08 15:46
Modified
2026-06-14 18:07
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: cee74f47a6baba0ac457e87687fdcf0abd599f0a
Version: cee74f47a6baba0ac457e87687fdcf0abd599f0a
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          "product": "Linux",
          "programFiles": [
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: allow multiple opens of /sys/fs/selinux/policy\n\nCurrently there can only be a single open of /sys/fs/selinux/policy at\nany time. This allows any process to block any other process from\nreading the kernel policy. The original motivation seems to have been\na mix of preventing an inconsistent view of the policy size and\npreventing userspace from allocating kernel memory without bound, but\nthis is arguably equally bad. Eliminate the policy_opened flag and\nshrink the critical section that the policy mutex is held. While we\nare making changes here, drop a couple of extraneous BUG_ONs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T18:07:43.508Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/714362f3779dfa453a78ced32396a72726962a41"
        },
        {
          "url": "https://git.kernel.org/stable/c/a02cd6805562305f936e807da83e253b719dd965"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46302",
    "datePublished": "2026-06-08T15:46:29.545Z",
    "dateReserved": "2026-05-13T15:03:33.111Z",
    "dateUpdated": "2026-06-14T18:07:43.508Z",
    "state": "PUBLISHED"
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