# esp: downgrade zerocopy managed frags before mutating skb frags

CVE record · `CVE-2026-98368`

- **Identifiers:** `CVE-2026-98368`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 Oct 2026, 08:46 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: `753f1ca4e1e50248a1b760c9774d6d6b354562cc to before 2359264f377cdbdef2d95868cc8fb572949e48d3` (git)
  - affected: `753f1ca4e1e50248a1b760c9774d6d6b354562cc to before 69a768c12398cada8528080332c822623fa7064d` (git)
  - affected: `753f1ca4e1e50248a1b760c9774d6d6b354562cc to before 6508304ac2c8cdafca2f4ab915df8c707893e134` (git)
  - affected: `753f1ca4e1e50248a1b760c9774d6d6b354562cc to before 6cab554f2c0f28773f712ed3a5479103f42ce844` (git)
  - affected: `753f1ca4e1e50248a1b760c9774d6d6b354562cc to before 0d0845ee61c5df47cc68bc446501f48f71e8dcc6` (git)
  - affected: `753f1ca4e1e50248a1b760c9774d6d6b354562cc to before f89416eb3db151170a6f3c6dfc5239d26cdce4d2` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.0`
  - unaffected: `before 6.0` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 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:** 0.0012, the 1st percentile, on 8 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 6 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98368](https://www.cve.org/CVERecord?id=CVE-2026-98368)
- [NVD: CVE-2026-98368](https://nvd.nist.gov/vuln/detail/CVE-2026-98368)

### References from the CNA

- <https://git.kernel.org/stable/c/2359264f377cdbdef2d95868cc8fb572949e48d3>
- <https://git.kernel.org/stable/c/69a768c12398cada8528080332c822623fa7064d>
- <https://git.kernel.org/stable/c/6508304ac2c8cdafca2f4ab915df8c707893e134>
- <https://git.kernel.org/stable/c/6cab554f2c0f28773f712ed3a5479103f42ce844>
- <https://git.kernel.org/stable/c/0d0845ee61c5df47cc68bc446501f48f71e8dcc6>
- <https://git.kernel.org/stable/c/f89416eb3db151170a6f3c6dfc5239d26cdce4d2>

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-2026-98368>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98368/>. Everything for agents: <https://agentprime.io/llms.txt>.