# ipvlan: inherit needed_headroom and needed_tailroom from phy_dev

CVE record · `CVE-2026-74744`

- **Identifiers:** `CVE-2026-74744`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 26 Aug 2026
- **Updated:** 16 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 26 Aug 2026, 14:36 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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `2ad7bf3638411cb547f2823df08166c13ab04269 to before af602c4d0ee548da18e2409b4b4da1079625a372` (git)
  - affected: `2ad7bf3638411cb547f2823df08166c13ab04269 to before f3c17ff65f54781cde696e16a6c577615ed735aa` (git)
  - affected: `2ad7bf3638411cb547f2823df08166c13ab04269 to before c0fbe31f6b20ade0465130685859faa5c86fda59` (git)
  - affected: `2ad7bf3638411cb547f2823df08166c13ab04269 to before 5f33188457bbcc1b11ca87084037963c516ed3d9` (git)
  - affected: `2ad7bf3638411cb547f2823df08166c13ab04269 to before 5c2ca77212eb38559b0353b8363b7a84f4b019dd` (git)
  - affected: `2ad7bf3638411cb547f2823df08166c13ab04269 to before e16e960d55a40d36bd7c2494cc005e757dc9a1ef` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.19`
  - unaffected: `before 3.19` (semver)
  - unaffected: `6.1.184 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.153 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.105 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.46 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.10 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0051, the 44th percentile, on 15 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 26 Aug 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-74744](https://www.cve.org/CVERecord?id=CVE-2026-74744)
- [NVD: CVE-2026-74744](https://nvd.nist.gov/vuln/detail/CVE-2026-74744)

### References from the CNA

- <https://git.kernel.org/stable/c/af602c4d0ee548da18e2409b4b4da1079625a372>
- <https://git.kernel.org/stable/c/f3c17ff65f54781cde696e16a6c577615ed735aa>
- <https://git.kernel.org/stable/c/c0fbe31f6b20ade0465130685859faa5c86fda59>
- <https://git.kernel.org/stable/c/5f33188457bbcc1b11ca87084037963c516ed3d9>
- <https://git.kernel.org/stable/c/5c2ca77212eb38559b0353b8363b7a84f4b019dd>
- <https://git.kernel.org/stable/c/e16e960d55a40d36bd7c2494cc005e757dc9a1ef>

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-2026-74744>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-74744/>. Everything for agents: <https://agentprime.io/llms.txt>.