# ext4: skip extra isize expansion during mount to prevent deadlock

CVE record · `CVE-2026-93268`

- **Identifiers:** `CVE-2026-93268`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 15:52 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: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before 41897f1bcf4ace5f1f28d0be784b6f4f0e929641` (git)
  - affected: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before 9c3469377b1d8caba6bec6ef3c460810bbfb02cc` (git)
  - affected: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before 1dd4882dbdc8bfdf2182fa388883c143fac0902a` (git)
  - affected: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before 7ba09330d9ea6e996228316719eae812d7e04983` (git)
  - affected: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before c5e6434cc55f30220b228be237bb666351f9f4dd` (git)
  - affected: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before 7ace189b9ea79cf78df9c32b940ce12735f9459a` (git)
  - affected: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before 2fb8ff81659a57c42bb7b49e8339a2be2a318ef8` (git)
  - affected: `c8585c6fcaf2011de54c3592e80a634a2b9e1a7f to before 7461c60b9c6a839b13ad4c3490681a0cf5aa0637` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.7`
  - unaffected: `before 4.7` (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: `6.18.52 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 10th percentile, on 13 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-2026-93268](https://www.cve.org/CVERecord?id=CVE-2026-93268)
- [NVD: CVE-2026-93268](https://nvd.nist.gov/vuln/detail/CVE-2026-93268)

### References from the CNA

- <https://git.kernel.org/stable/c/41897f1bcf4ace5f1f28d0be784b6f4f0e929641>
- <https://git.kernel.org/stable/c/9c3469377b1d8caba6bec6ef3c460810bbfb02cc>
- <https://git.kernel.org/stable/c/1dd4882dbdc8bfdf2182fa388883c143fac0902a>
- <https://git.kernel.org/stable/c/7ba09330d9ea6e996228316719eae812d7e04983>
- <https://git.kernel.org/stable/c/c5e6434cc55f30220b228be237bb666351f9f4dd>
- <https://git.kernel.org/stable/c/7ace189b9ea79cf78df9c32b940ce12735f9459a>
- <https://git.kernel.org/stable/c/2fb8ff81659a57c42bb7b49e8339a2be2a318ef8>
- <https://git.kernel.org/stable/c/7461c60b9c6a839b13ad4c3490681a0cf5aa0637>

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-2026-93268>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93268/>. Everything for agents: <https://agentprime.io/llms.txt>.