# landlock: Fix use-after-free of the source's parent directory

CVE record · `CVE-2026-97594`

- **Identifiers:** `CVE-2026-97594`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 10:22 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: `b91c3e4ea756b12b7d992529226edce1cfd854d7 to before 0475440ff8c04be26a88733af0c85f597bb28c0a` (git)
  - affected: `b91c3e4ea756b12b7d992529226edce1cfd854d7 to before 48fc1c74052c956c59d5b16b5e18e0dd36b76aa2` (git)
  - affected: `b91c3e4ea756b12b7d992529226edce1cfd854d7 to before 4c37992b9668c4f37aae41dd95c369f7b6009915` (git)
  - affected: `b91c3e4ea756b12b7d992529226edce1cfd854d7 to before 379efd2ce8b26fd35feb13ccc2f671ff105a5052` (git)
  - affected: `b91c3e4ea756b12b7d992529226edce1cfd854d7 to before ba29c46ccfe3ebadfb8aa18149186c49f84b14f8` (git)
  - affected: `b91c3e4ea756b12b7d992529226edce1cfd854d7 to before 2c6dc792538260a8087ac5b22c31b3b8e47c85d6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.19`
  - unaffected: `before 5.19` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 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:L/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th percentile, on 12 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 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-97594](https://www.cve.org/CVERecord?id=CVE-2026-97594)
- [NVD: CVE-2026-97594](https://nvd.nist.gov/vuln/detail/CVE-2026-97594)

### References from the CNA

- <https://git.kernel.org/stable/c/0475440ff8c04be26a88733af0c85f597bb28c0a>
- <https://git.kernel.org/stable/c/48fc1c74052c956c59d5b16b5e18e0dd36b76aa2>
- <https://git.kernel.org/stable/c/4c37992b9668c4f37aae41dd95c369f7b6009915>
- <https://git.kernel.org/stable/c/379efd2ce8b26fd35feb13ccc2f671ff105a5052>
- <https://git.kernel.org/stable/c/ba29c46ccfe3ebadfb8aa18149186c49f84b14f8>
- <https://git.kernel.org/stable/c/2c6dc792538260a8087ac5b22c31b3b8e47c85d6>

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-2026-97594>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97594/>. Everything for agents: <https://agentprime.io/llms.txt>.