# md/raid5-ppl: fix use-after-free in ppl_do_flush()

CVE record · `CVE-2026-93262`

- **Identifiers:** `CVE-2026-93262`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **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: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before cf01f9413565e86673baf927291a088b6975692b` (git)
  - affected: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before e7505842f1329ece90cb9ea0db87772aeca44052` (git)
  - affected: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before b5123bf667ac29ddd8106f9ca7cc01316513ae66` (git)
  - affected: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before e77c80670f2c2bf491da9b173931e1da4677c23a` (git)
  - affected: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before 8914c3d40870f16429a326e97e4016bedc6ede4c` (git)
  - affected: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before 455b56209f9615c3902dcc398dd867abb5ade3ab` (git)
  - affected: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before fcf21df7d3c50c8ebeb0757df5d21b02dcae4218` (git)
  - affected: `1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 to before 371f7a1b392edc8b7cf449cc7713179b588f2d0e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.16`
  - unaffected: `before 4.16` (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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0015, the 4th 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-2026-93262](https://www.cve.org/CVERecord?id=CVE-2026-93262)
- [NVD: CVE-2026-93262](https://nvd.nist.gov/vuln/detail/CVE-2026-93262)

### References from the CNA

- <https://git.kernel.org/stable/c/cf01f9413565e86673baf927291a088b6975692b>
- <https://git.kernel.org/stable/c/e7505842f1329ece90cb9ea0db87772aeca44052>
- <https://git.kernel.org/stable/c/b5123bf667ac29ddd8106f9ca7cc01316513ae66>
- <https://git.kernel.org/stable/c/e77c80670f2c2bf491da9b173931e1da4677c23a>
- <https://git.kernel.org/stable/c/8914c3d40870f16429a326e97e4016bedc6ede4c>
- <https://git.kernel.org/stable/c/455b56209f9615c3902dcc398dd867abb5ade3ab>
- <https://git.kernel.org/stable/c/fcf21df7d3c50c8ebeb0757df5d21b02dcae4218>
- <https://git.kernel.org/stable/c/371f7a1b392edc8b7cf449cc7713179b588f2d0e>

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-2026-93262>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93262/>. Everything for agents: <https://agentprime.io/llms.txt>.