# dm-pcache: fix use-after-free and invalid seg operations in kset_replay()

CVE record · `CVE-2026-80955`

- **Identifiers:** `CVE-2026-80955`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:42 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: `1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 1894fc7a3bab90143dcd26ef8ee27040ef4a7501` (git)
  - affected: `1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before f39a3e9cc5946473e16d6f5071b2ee0216c56d06` (git)
  - affected: `1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before c2e894eac398b258f12fdec73ed6ba081047f7b3` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.18`
  - unaffected: `before 6.18` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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:** 0.0017, the 6th percentile, on 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80955](https://www.cve.org/CVERecord?id=CVE-2026-80955)
- [NVD: CVE-2026-80955](https://nvd.nist.gov/vuln/detail/CVE-2026-80955)

### References from the CNA

- <https://git.kernel.org/stable/c/1894fc7a3bab90143dcd26ef8ee27040ef4a7501>
- <https://git.kernel.org/stable/c/f39a3e9cc5946473e16d6f5071b2ee0216c56d06>
- <https://git.kernel.org/stable/c/c2e894eac398b258f12fdec73ed6ba081047f7b3>

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-2026-80955>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80955/>. Everything for agents: <https://agentprime.io/llms.txt>.