# ocfs2: fix missing metadata reservation for large xattrs

CVE record · `CVE-2026-80809`

- **Identifiers:** `CVE-2026-80809`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 4 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 15:13 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: `a78f9f4668949a6588b8872f162e86685c63d023 to before 743ac908282ac97ef6e73ac3a92df2cc8ecb7479` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before 04ba24bce61c917b5b3009f0db470cbb72e26a0d` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before b4663405ae29d36011cd712d243456f3f9ab700d` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before 6a009f1e61b11d9e23d3c5aa1dacfb010945da45` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before b9eb5c9fdd81d82976d4d5be2b2458eb7d7e46ec` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before 6176313622e34fa3e2b66b9d0682d1e1c6b365c5` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before a3ccb57086dd7652d5ecb826486144198a98a8e9` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before 50f0cbec45b0f3fd7e1263d01916518dbf31eb3f` (git)
  - affected: `a78f9f4668949a6588b8872f162e86685c63d023 to before 0cdc7dde00ec63ac714271fa8b2918d630b8da1a` (git)
  - affected: `92f61d8a31e270f9391e7bcc0ac638bd4262a8e0` (git)
  - affected: `2.6.34.2 to before 2.6.35` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.35`
  - unaffected: `before 2.6.35` (semver)
  - unaffected: `5.10.267 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.218 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.185 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.154 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.106 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.47 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.11 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2.1 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 9th 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 4 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80809](https://www.cve.org/CVERecord?id=CVE-2026-80809)
- [NVD: CVE-2026-80809](https://nvd.nist.gov/vuln/detail/CVE-2026-80809)

### References from the CNA

- <https://git.kernel.org/stable/c/743ac908282ac97ef6e73ac3a92df2cc8ecb7479>
- <https://git.kernel.org/stable/c/04ba24bce61c917b5b3009f0db470cbb72e26a0d>
- <https://git.kernel.org/stable/c/b4663405ae29d36011cd712d243456f3f9ab700d>
- <https://git.kernel.org/stable/c/6a009f1e61b11d9e23d3c5aa1dacfb010945da45>
- <https://git.kernel.org/stable/c/b9eb5c9fdd81d82976d4d5be2b2458eb7d7e46ec>
- <https://git.kernel.org/stable/c/6176313622e34fa3e2b66b9d0682d1e1c6b365c5>
- <https://git.kernel.org/stable/c/a3ccb57086dd7652d5ecb826486144198a98a8e9>
- <https://git.kernel.org/stable/c/50f0cbec45b0f3fd7e1263d01916518dbf31eb3f>
- <https://git.kernel.org/stable/c/0cdc7dde00ec63ac714271fa8b2918d630b8da1a>

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-2026-80809>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80809/>. Everything for agents: <https://agentprime.io/llms.txt>.