# ocfs2: fix buffer head management in ocfs2_read_blocks()

CVE record · `CVE-2026-80881`

- **Identifiers:** `CVE-2026-80881`
- **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:** 4 Sept 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 16:49 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: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before a4eae1499c760949a93459d11390bd1fd823d31d` (git)
  - affected: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before 4ab17e328522a4df5fe0f0dcf39098118b1feeaa` (git)
  - affected: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before 5927acb3e2c99985a14adecd9d1b67ba191c622d` (git)
  - affected: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before ecb3f9386f4353034caef77239473c627232db17` (git)
  - affected: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before 61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766` (git)
  - affected: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before 0e389fc290c350c67591abf4c367119f4689f310` (git)
  - affected: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before 9e7a057934cdd58e4cc94350bcfe5367bbee0f8e` (git)
  - affected: `cf76c78595ca87548ca5e45c862ac9e0949c4687 to before 6371a07148ee979af22a9d6f4c277462953a9a4a` (git)
  - affected: `01f93d5e36753fc4d06ec67f05ce78c9c6f2dd56` (git)
  - affected: `65cbd1279f4b999d56a838344a30642db24cd215` (git)
  - affected: `97e1db17bc1ef4c2e1789bc9323c7be44fba53f8` (git)
  - affected: `6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc` (git)
  - and 4 more
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.20`
  - unaffected: `before 4.20` (semver)
  - unaffected: `5.10.261 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.212 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.178 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.145 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.97 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.40 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.5 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 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:** 0.0016, the 5th 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-2026-80881](https://www.cve.org/CVERecord?id=CVE-2026-80881)
- [NVD: CVE-2026-80881](https://nvd.nist.gov/vuln/detail/CVE-2026-80881)

### References from the CNA

- <https://git.kernel.org/stable/c/a4eae1499c760949a93459d11390bd1fd823d31d>
- <https://git.kernel.org/stable/c/4ab17e328522a4df5fe0f0dcf39098118b1feeaa>
- <https://git.kernel.org/stable/c/5927acb3e2c99985a14adecd9d1b67ba191c622d>
- <https://git.kernel.org/stable/c/ecb3f9386f4353034caef77239473c627232db17>
- <https://git.kernel.org/stable/c/61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766>
- <https://git.kernel.org/stable/c/0e389fc290c350c67591abf4c367119f4689f310>
- <https://git.kernel.org/stable/c/9e7a057934cdd58e4cc94350bcfe5367bbee0f8e>
- <https://git.kernel.org/stable/c/6371a07148ee979af22a9d6f4c277462953a9a4a>

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-2026-80881>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80881/>. Everything for agents: <https://agentprime.io/llms.txt>.