# fsnotify: Fix stale object mask after concurrent mark updates

CVE record · `CVE-2026-89595`

- **Identifiers:** `CVE-2026-89595`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **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, 19:44 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: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before 27d172b60eeca5c8fd51b246f9fb959067cf102b` (git)
  - affected: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before 2f09f08d602647fc4e328fc27ecb4c3008d10338` (git)
  - affected: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before de75382d6e354b2b055df4896d12a91969f12090` (git)
  - affected: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before 343ae18e960f6c5f1d34d58a69750c62cd463228` (git)
  - affected: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before 92289e66639f62abc754c6f3bce5ead7e98e4ee2` (git)
  - affected: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before 947400af98b9e63841929d079a2c3ea0a8ba227b` (git)
  - affected: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before ac8d8b599d466a129122bded77db3d0f8b96b461` (git)
  - affected: `63c882a05416e18de6fb59f7dd6da48f3bbe8273 to before e422777fdd4746de1109575c51e65038d4c5c1be` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.31`
  - unaffected: `before 2.6.31` (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: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0022, the 12th 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-2026-89595](https://www.cve.org/CVERecord?id=CVE-2026-89595)
- [NVD: CVE-2026-89595](https://nvd.nist.gov/vuln/detail/CVE-2026-89595)

### References from the CNA

- <https://git.kernel.org/stable/c/27d172b60eeca5c8fd51b246f9fb959067cf102b>
- <https://git.kernel.org/stable/c/2f09f08d602647fc4e328fc27ecb4c3008d10338>
- <https://git.kernel.org/stable/c/de75382d6e354b2b055df4896d12a91969f12090>
- <https://git.kernel.org/stable/c/343ae18e960f6c5f1d34d58a69750c62cd463228>
- <https://git.kernel.org/stable/c/92289e66639f62abc754c6f3bce5ead7e98e4ee2>
- <https://git.kernel.org/stable/c/947400af98b9e63841929d079a2c3ea0a8ba227b>
- <https://git.kernel.org/stable/c/ac8d8b599d466a129122bded77db3d0f8b96b461>
- <https://git.kernel.org/stable/c/e422777fdd4746de1109575c51e65038d4c5c1be>

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-2026-89595>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89595/>. Everything for agents: <https://agentprime.io/llms.txt>.