# timekeeping: Check the return value of tk_get_aux_ts64 in \_\_do_adjtimex()

CVE record · `CVE-2026-80927`

- **Identifiers:** `CVE-2026-80927`
- **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: `4eca49d0b621b314ac7c80f363932ec6f6c8abc8 to before fecf1e37775269ad38c172b468ad4ecc3968aa63` (git)
  - affected: `4eca49d0b621b314ac7c80f363932ec6f6c8abc8 to before bc59dac50cb45a725f7a50760c7cc72a0964f722` (git)
  - affected: `4eca49d0b621b314ac7c80f363932ec6f6c8abc8 to before 4b61084b11bcecce86d03804ff30f8d7b465593c` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.17`
  - unaffected: `before 6.17` (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-2026-80927](https://www.cve.org/CVERecord?id=CVE-2026-80927)
- [NVD: CVE-2026-80927](https://nvd.nist.gov/vuln/detail/CVE-2026-80927)

### References from the CNA

- <https://git.kernel.org/stable/c/fecf1e37775269ad38c172b468ad4ecc3968aa63>
- <https://git.kernel.org/stable/c/bc59dac50cb45a725f7a50760c7cc72a0964f722>
- <https://git.kernel.org/stable/c/4b61084b11bcecce86d03804ff30f8d7b465593c>

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-2026-80927>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80927/>. Everything for agents: <https://agentprime.io/llms.txt>.