# selinux: fix overlayfs mmap() and mprotect() access checks

CVE record · `CVE-2026-46054`

- **Identifiers:** `CVE-2026-46054`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-280](https://cwe.mitre.org/data/definitions/280.html) · [CWE-862](https://cwe.mitre.org/data/definitions/862.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md) · [CWE-280](https://agentprime.io/advisories/tag/cwe-280.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 27 May 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 27 May 2026, 12:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `2f502839e85ab265f03f25f30d6463154aee5473 to before bc6c380c1159de52a252ed11f19a42c47f60a735` (git)
  - affected: `2f502839e85ab265f03f25f30d6463154aee5473 to before 8bacd09f12c27710228562e4d13163e58c5f4a45` (git)
  - affected: `2f502839e85ab265f03f25f30d6463154aee5473 to before d844702198395d3f80222777030f69db6be6b709` (git)
  - affected: `2f502839e85ab265f03f25f30d6463154aee5473 to before cd0e707a927a70cdfd8bc5a512a9719a87f5ed51` (git)
  - affected: `2f502839e85ab265f03f25f30d6463154aee5473 to before 82544d36b1729153c8aeb179e84750f0c085d3b1` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.19`
  - unaffected: `before 4.19` (semver)
  - unaffected: `6.6.144 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.95 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.38 to 6.18.*, inclusive` (semver)
  - unaffected: `7.0.4 to 7.0.*, inclusive` (semver)
  - unaffected: `7.1 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.1 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`, from CNA (Linux) (used for this record)
- 7.0 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`, from ADP (redhat-SADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0012, the 2nd percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 27 May 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-46054](https://www.cve.org/CVERecord?id=CVE-2026-46054)
- [NVD: CVE-2026-46054](https://nvd.nist.gov/vuln/detail/CVE-2026-46054)

### References from the CNA

- <https://git.kernel.org/stable/c/bc6c380c1159de52a252ed11f19a42c47f60a735>
- <https://git.kernel.org/stable/c/8bacd09f12c27710228562e4d13163e58c5f4a45>
- <https://git.kernel.org/stable/c/d844702198395d3f80222777030f69db6be6b709>
- <https://git.kernel.org/stable/c/cd0e707a927a70cdfd8bc5a512a9719a87f5ed51>
- <https://git.kernel.org/stable/c/82544d36b1729153c8aeb179e84750f0c085d3b1>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-46054>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-46054/>. Everything for agents: <https://agentprime.io/llms.txt>.