GHSA-M47F-J4G8-CJ3F
Vulnerability from github – Published: 2026-06-08 18:31 – Updated: 2026-10-30 15:32In 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": [],
"aliases": [
"CVE-2026-46302"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-08T17:16:48Z",
"severity": "MODERATE"
},
"details": "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.",
"id": "GHSA-m47f-j4g8-cj3f",
"modified": "2026-10-30T15:32:41Z",
"published": "2026-06-08T18:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46302"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0ed712134a3db0075bfe9a0f8536c48728ec745e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/714362f3779dfa453a78ced32396a72726962a41"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9795810d116bc9071485929ba6471dc8d5bd158b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a02cd6805562305f936e807da83e253b719dd965"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c24d2e190b955baf3a95e05d34b192f61bd201b3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d8cafd0226d5df682d1f4ea978a4318fe3a11210"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.