# net: ravb: avoid dereferencing an invalid PTP clock

CVE record · `CVE-2026-80992`

- **Identifiers:** `CVE-2026-80992`
- **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: `a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 29ffd972531f8e6e0edf4ea3496190acff9fc9c2` (git)
  - affected: `a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before bf3308416a2be85dcc9965b614a745b40beeff14` (git)
  - affected: `a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before fc710f89a644e030a7ca15343176ca862fd61b9d` (git)
  - affected: `a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 8d4d06d6e2b501cb8e30ed3b1924c470358e8052` (git)
  - affected: `a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 0aaa53936419cf0c19c670387fc6d431e042a1b6` (git)
  - affected: `a0d2f20650e81407d8e51ad2cbdc492861c74e9c to before 1f77af0aaf277413ff32f6ff8c2c4282bd64c897` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.2`
  - unaffected: `before 4.2` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (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-2026-80992](https://www.cve.org/CVERecord?id=CVE-2026-80992)
- [NVD: CVE-2026-80992](https://nvd.nist.gov/vuln/detail/CVE-2026-80992)

### References from the CNA

- <https://git.kernel.org/stable/c/29ffd972531f8e6e0edf4ea3496190acff9fc9c2>
- <https://git.kernel.org/stable/c/bf3308416a2be85dcc9965b614a745b40beeff14>
- <https://git.kernel.org/stable/c/fc710f89a644e030a7ca15343176ca862fd61b9d>
- <https://git.kernel.org/stable/c/8d4d06d6e2b501cb8e30ed3b1924c470358e8052>
- <https://git.kernel.org/stable/c/0aaa53936419cf0c19c670387fc6d431e042a1b6>
- <https://git.kernel.org/stable/c/1f77af0aaf277413ff32f6ff8c2c4282bd64c897>

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-2026-80992>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80992/>. Everything for agents: <https://agentprime.io/llms.txt>.