# ext4: validate readdir offset before accessing dirent

CVE record · `CVE-2026-92499`

- **Identifiers:** `CVE-2026-92499`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 10 Nov 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:10 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: `ac27a0ec112a089f1a5102bc8dffc79c8c815571 to before 094e8139cf5a5e37b363ac984f628359558415e6` (git)
  - affected: `ac27a0ec112a089f1a5102bc8dffc79c8c815571 to before 64d445d40e5ea4c4d4d88880db753b370cb69161` (git)
  - affected: `ac27a0ec112a089f1a5102bc8dffc79c8c815571 to before b4c728577933753180e3e97f08424d5bcaff705e` (git)
  - affected: `ac27a0ec112a089f1a5102bc8dffc79c8c815571 to before bc4b7b0414c33b2c8898eb04386df0d21a13dad8` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.19`
  - unaffected: `before 2.6.19` (semver)
  - unaffected: `6.12.117 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0020, the 9th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 17 Sept 2026, 16:10 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-92499)
- 17 Sept 2026, 17:17 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-92499)

## Sources

- [CVE List: CVE-2026-92499](https://www.cve.org/CVERecord?id=CVE-2026-92499)
- [NVD: CVE-2026-92499](https://nvd.nist.gov/vuln/detail/CVE-2026-92499)

### References from the CNA

- <https://git.kernel.org/stable/c/094e8139cf5a5e37b363ac984f628359558415e6>
- <https://git.kernel.org/stable/c/64d445d40e5ea4c4d4d88880db753b370cb69161>
- <https://git.kernel.org/stable/c/b4c728577933753180e3e97f08424d5bcaff705e>
- <https://git.kernel.org/stable/c/bc4b7b0414c33b2c8898eb04386df0d21a13dad8>

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-2026-92499>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-92499/>. Everything for agents: <https://agentprime.io/llms.txt>.