# xfrm: Fix skb double-free in xfrm_dev_direct_output()

CVE record · `CVE-2026-92489`

- **Identifiers:** `CVE-2026-92489`
- **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:** 17 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:10 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: `bfb9b9404a53a72524ce695551755117e9d3deb0 to before 621871b696b108026bf4b44ed4085ffa2102f417` (git)
  - affected: `a0395e96831adee8ffa016bf958e4dce9ece656e to before bc9297796bfdcc8d9609236e54519a4f38737aac` (git)
  - affected: `5eddd76ec2fd1988f0a3450fde9730b10dd22992 to before 02deb637e965950148752a304dd1471212dd6470` (git)
  - affected: `5eddd76ec2fd1988f0a3450fde9730b10dd22992 to before 56a347950e661c1a7f8f31c43a2ea53c2323b6f4` (git)
  - affected: `5eddd76ec2fd1988f0a3450fde9730b10dd22992 to before 2aed51fc58d9ce450e2c116efb956160fd06fa02` (git)
  - affected: `d1d673a5bede3767252cff19c0ab1e5387c6f43f` (git)
  - affected: `6.6.85 to before 6.6.157` (semver)
  - affected: `6.12.21 to before 6.12.110` (semver)
  - affected: `6.13.9 to before 6.14` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.14`
  - unaffected: `before 6.14` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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

- 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:** 0.0046, the 40th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-92489](https://www.cve.org/CVERecord?id=CVE-2026-92489)
- [NVD: CVE-2026-92489](https://nvd.nist.gov/vuln/detail/CVE-2026-92489)

### References from the CNA

- <https://git.kernel.org/stable/c/621871b696b108026bf4b44ed4085ffa2102f417>
- <https://git.kernel.org/stable/c/bc9297796bfdcc8d9609236e54519a4f38737aac>
- <https://git.kernel.org/stable/c/02deb637e965950148752a304dd1471212dd6470>
- <https://git.kernel.org/stable/c/56a347950e661c1a7f8f31c43a2ea53c2323b6f4>
- <https://git.kernel.org/stable/c/2aed51fc58d9ce450e2c116efb956160fd06fa02>

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-2026-92489>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-92489/>. Everything for agents: <https://agentprime.io/llms.txt>.