# ocfs2: validate external xattr entries when reading metadata

CVE record · `CVE-2026-90320`

- **Identifiers:** `CVE-2026-90320`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 21 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:08 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: `cf1d6c763fbcb115263114302485ad17e7933d87 to before dc5778dbd0b6c411107a0e37e913a94b3c2f2728` (git)
  - affected: `cf1d6c763fbcb115263114302485ad17e7933d87 to before ee4ef26927e967ea699b3f0d7ecf97ce044fbc79` (git)
  - affected: `cf1d6c763fbcb115263114302485ad17e7933d87 to before 9f4129b6905b7d638bbc9eb8013c3989cbe30b7e` (git)
  - affected: `cf1d6c763fbcb115263114302485ad17e7933d87 to before 2cf82b46d5e43be0dfbaac7fa1073cec2fc1f5e6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.28`
  - unaffected: `before 2.6.28` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, 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

- 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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-2026-90320](https://www.cve.org/CVERecord?id=CVE-2026-90320)
- [NVD: CVE-2026-90320](https://nvd.nist.gov/vuln/detail/CVE-2026-90320)

### References from the CNA

- <https://git.kernel.org/stable/c/dc5778dbd0b6c411107a0e37e913a94b3c2f2728>
- <https://git.kernel.org/stable/c/ee4ef26927e967ea699b3f0d7ecf97ce044fbc79>
- <https://git.kernel.org/stable/c/9f4129b6905b7d638bbc9eb8013c3989cbe30b7e>
- <https://git.kernel.org/stable/c/2cf82b46d5e43be0dfbaac7fa1073cec2fc1f5e6>

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-2026-90320>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90320/>. Everything for agents: <https://agentprime.io/llms.txt>.