# f2fs: validate inline dentry name lengths before conversion

CVE record · `CVE-2026-93816`

- **Identifiers:** `CVE-2026-93816`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Sept 2026
- **Updated:** 3 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 16:02 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: `675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 6b5552449fc5acb8e6ecf045b46702b29b71165a` (git)
  - affected: `675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 6343208fd73f3f2b8044c0922185cd13ff807693` (git)
  - affected: `675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 4dd81faa63fd54b9ba1a83c304e6d0bd03f1898d` (git)
  - affected: `675f10bde6cc3874632a8f684df2a8a2a8ace76e to before aee4e6de71ca77626c006166ff00f1d01ff990c9` (git)
  - affected: `675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 2ce0bc5853bec7cdc724477a87ea579fde664243` (git)
  - affected: `675f10bde6cc3874632a8f684df2a8a2a8ace76e to before 7caa8a0ae94b132576c2e46e9b4fd4e0f356f373` (git)
  - affected: `675f10bde6cc3874632a8f684df2a8a2a8ace76e to before cfcd0e49a178b3dac2c0ece656079081dbf5da74` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.7`
  - unaffected: `before 4.7` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, 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

- 7.1 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0013, the 2nd 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 24 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-93816](https://www.cve.org/CVERecord?id=CVE-2026-93816)
- [NVD: CVE-2026-93816](https://nvd.nist.gov/vuln/detail/CVE-2026-93816)

### References from the CNA

- <https://git.kernel.org/stable/c/6b5552449fc5acb8e6ecf045b46702b29b71165a>
- <https://git.kernel.org/stable/c/6343208fd73f3f2b8044c0922185cd13ff807693>
- <https://git.kernel.org/stable/c/4dd81faa63fd54b9ba1a83c304e6d0bd03f1898d>
- <https://git.kernel.org/stable/c/aee4e6de71ca77626c006166ff00f1d01ff990c9>
- <https://git.kernel.org/stable/c/2ce0bc5853bec7cdc724477a87ea579fde664243>
- <https://git.kernel.org/stable/c/7caa8a0ae94b132576c2e46e9b4fd4e0f356f373>
- <https://git.kernel.org/stable/c/cfcd0e49a178b3dac2c0ece656079081dbf5da74>

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-2026-93816>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93816/>. Everything for agents: <https://agentprime.io/llms.txt>.