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CVE record · `CVE-2026-90191`

- **Identifiers:** `CVE-2026-90191`
- **State:** Confirmed
- **Severity:** CVSS 8.4 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:07 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: `bf3022a4eb119c6b4e3424d6b19d8bfdfbc9bb57 to before cbc24bce70dfd91c7b2f53b4fa896e9a4b6d6a6b` (git)
  - affected: `bf3022a4eb119c6b4e3424d6b19d8bfdfbc9bb57 to before c7bc5e7677bcda7a446d63b989cfaa3fe91d6b76` (git)
  - affected: `bf3022a4eb119c6b4e3424d6b19d8bfdfbc9bb57 to before 11d5af151bcbe78f5a579e0faecd3be9cea0399a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.18`
  - unaffected: `before 6.18` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 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

- 8.4 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90191](https://www.cve.org/CVERecord?id=CVE-2026-90191)
- [NVD: CVE-2026-90191](https://nvd.nist.gov/vuln/detail/CVE-2026-90191)

### References from the CNA

- <https://git.kernel.org/stable/c/cbc24bce70dfd91c7b2f53b4fa896e9a4b6d6a6b>
- <https://git.kernel.org/stable/c/c7bc5e7677bcda7a446d63b989cfaa3fe91d6b76>
- <https://git.kernel.org/stable/c/11d5af151bcbe78f5a579e0faecd3be9cea0399a>

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-2026-90191>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90191/>. Everything for agents: <https://agentprime.io/llms.txt>.