# dm-pcache: detect a cycle in the last-kset chain during replay

CVE record · `CVE-2026-80957`

- **Identifiers:** `CVE-2026-80957`
- **State:** Confirmed
- **Severity:** No CVSS score
- **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 663ee2f3824a505b983162de44134e789f8230da` (git)
  - affected: `1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 5311dfc5cd70edccd110257e3f30b2c1dcd3768d` (git)
  - affected: `1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 to before 16c3b3a326e70f246a605b3dc27b7f83ba4743e3` (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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 10th 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-2026-80957](https://www.cve.org/CVERecord?id=CVE-2026-80957)
- [NVD: CVE-2026-80957](https://nvd.nist.gov/vuln/detail/CVE-2026-80957)

### References from the CNA

- <https://git.kernel.org/stable/c/663ee2f3824a505b983162de44134e789f8230da>
- <https://git.kernel.org/stable/c/5311dfc5cd70edccd110257e3f30b2c1dcd3768d>
- <https://git.kernel.org/stable/c/16c3b3a326e70f246a605b3dc27b7f83ba4743e3>

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-2026-80957>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-80957/>. Everything for agents: <https://agentprime.io/llms.txt>.