# ocfs2: validate lengths in dlm_mig_lockres_handler

CVE record · `CVE-2026-89494`

- **Identifiers:** `CVE-2026-89494`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:43 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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before 4a5798253212093b9ff7d90c6cfbe348bcda1594` (git)
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before dce05b17db862f47ff60614017abe639b2e71cad` (git)
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before 0e999d56917f861f97adb961617b1828c9eb4733` (git)
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before 77686fa5bba135252d348e2dacf481fc19f60c41` (git)
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before f33041906885f96e190cde54e61ddc69de39e3ee` (git)
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before 50c4cc9183e11f83427efbf770f54851f4471c02` (git)
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before a8facb1670b4a0612183198e758d9539ef628ed9` (git)
  - affected: `6714d8e86bf443f6f7af50f9d432025649f091f5 to before b54e03d9b3697d25f4a0063cf717d459c5e3ad94` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.16`
  - unaffected: `before 2.6.16` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0071, the 54th percentile, on 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89494](https://www.cve.org/CVERecord?id=CVE-2026-89494)
- [NVD: CVE-2026-89494](https://nvd.nist.gov/vuln/detail/CVE-2026-89494)

### References from the CNA

- <https://git.kernel.org/stable/c/4a5798253212093b9ff7d90c6cfbe348bcda1594>
- <https://git.kernel.org/stable/c/dce05b17db862f47ff60614017abe639b2e71cad>
- <https://git.kernel.org/stable/c/0e999d56917f861f97adb961617b1828c9eb4733>
- <https://git.kernel.org/stable/c/77686fa5bba135252d348e2dacf481fc19f60c41>
- <https://git.kernel.org/stable/c/f33041906885f96e190cde54e61ddc69de39e3ee>
- <https://git.kernel.org/stable/c/50c4cc9183e11f83427efbf770f54851f4471c02>
- <https://git.kernel.org/stable/c/a8facb1670b4a0612183198e758d9539ef628ed9>
- <https://git.kernel.org/stable/c/b54e03d9b3697d25f4a0063cf717d459c5e3ad94>

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-2026-89494>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89494/>. Everything for agents: <https://agentprime.io/llms.txt>.