# ext4: drain in-flight DIO before buffered write fallback

CVE record · `CVE-2026-92501`

- **Identifiers:** `CVE-2026-92501`
- **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:** 19 Oct 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: `378f32bab3714f04c4e0c3aee4129f6703805550 to before fd7e0dab20837b9ea1eeef7c26f78ace8ac8258c` (git)
  - affected: `378f32bab3714f04c4e0c3aee4129f6703805550 to before f0af3ae09fb72382da1a5371bf6761b0264668e4` (git)
  - affected: `378f32bab3714f04c4e0c3aee4129f6703805550 to before 7341e234927ff215f1d5d0bcfe04b74f53af378d` (git)
  - affected: `378f32bab3714f04c4e0c3aee4129f6703805550 to before 74eee4ff9698a65b2e6e15dac0e50d6526ad5f20` (git)
  - affected: `378f32bab3714f04c4e0c3aee4129f6703805550 to before d47cdadd6e49023f7ee248048463807f1214f1ee` (git)
  - affected: `378f32bab3714f04c4e0c3aee4129f6703805550 to before 4e4e3eec506247c8f8bd8aaa1eb25e67016681a5` (git)
  - affected: `378f32bab3714f04c4e0c3aee4129f6703805550 to before 9fd3ffc3c51c9deaba99bd7b338fff2d08f52416` (git)
  - affected: `378f32bab3714f04c4e0c3aee4129f6703805550 to before 15cdefd0c0522f9d5e12d947fa04f4c11649b699` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.5`
  - unaffected: `before 5.5` (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:** 0.0018, the 7th 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-92501](https://www.cve.org/CVERecord?id=CVE-2026-92501)
- [NVD: CVE-2026-92501](https://nvd.nist.gov/vuln/detail/CVE-2026-92501)

### References from the CNA

- <https://git.kernel.org/stable/c/fd7e0dab20837b9ea1eeef7c26f78ace8ac8258c>
- <https://git.kernel.org/stable/c/f0af3ae09fb72382da1a5371bf6761b0264668e4>
- <https://git.kernel.org/stable/c/7341e234927ff215f1d5d0bcfe04b74f53af378d>
- <https://git.kernel.org/stable/c/74eee4ff9698a65b2e6e15dac0e50d6526ad5f20>
- <https://git.kernel.org/stable/c/d47cdadd6e49023f7ee248048463807f1214f1ee>
- <https://git.kernel.org/stable/c/4e4e3eec506247c8f8bd8aaa1eb25e67016681a5>
- <https://git.kernel.org/stable/c/9fd3ffc3c51c9deaba99bd7b338fff2d08f52416>
- <https://git.kernel.org/stable/c/15cdefd0c0522f9d5e12d947fa04f4c11649b699>

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-2026-92501>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-92501/>. Everything for agents: <https://agentprime.io/llms.txt>.