# flow_dissector: avoid u16 truncation of skb->len when computing thoff

CVE record · `CVE-2026-98955`

- **Identifiers:** `CVE-2026-98955`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 12:19 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: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before 3f6000fdf8a57b9786669869af8a3e050b541bf3` (git)
  - affected: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before 2c2f82b696c5e877f60ea77b7784e906a5e63014` (git)
  - affected: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before d44e66f5dd99319a32e378b610af7fcf78da985a` (git)
  - affected: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before d9e08836d06c84abb18470c94b12b131eaccdc7d` (git)
  - affected: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before 50d0cd575cab763f833d6ac6eb6550b23a0b3dae` (git)
  - affected: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before 9993e6a0ac1b5b3101ffba702cacb9f42b9909d8` (git)
  - affected: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before 52efce4755a4b8b82039caa773645ffc80b25362` (git)
  - affected: `d0c081b49137cd3200f2023c0875723be66e7ce5 to before 99bda1ecbd56905f8bd934b9cdccd3bd251192b1` (git)
  - affected: `d35cd5e279881ec36ff8cd82a2d9caebc0cce3fc` (git)
  - affected: `eecfa2eeefe3caef4c8d6b2284f6066c76ab26a1` (git)
  - affected: `80f327285cab6ab8e10c3ea03278add5dd99fb02` (git)
  - affected: `4.4.114 to before 4.5` (semver)
  - and 2 more
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.15`
  - unaffected: `before 4.15` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.113 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.11 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 11th percentile, on 6 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98955](https://www.cve.org/CVERecord?id=CVE-2026-98955)
- [NVD: CVE-2026-98955](https://nvd.nist.gov/vuln/detail/CVE-2026-98955)

### References from the CNA

- <https://git.kernel.org/stable/c/3f6000fdf8a57b9786669869af8a3e050b541bf3>
- <https://git.kernel.org/stable/c/2c2f82b696c5e877f60ea77b7784e906a5e63014>
- <https://git.kernel.org/stable/c/d44e66f5dd99319a32e378b610af7fcf78da985a>
- <https://git.kernel.org/stable/c/d9e08836d06c84abb18470c94b12b131eaccdc7d>
- <https://git.kernel.org/stable/c/50d0cd575cab763f833d6ac6eb6550b23a0b3dae>
- <https://git.kernel.org/stable/c/9993e6a0ac1b5b3101ffba702cacb9f42b9909d8>
- <https://git.kernel.org/stable/c/52efce4755a4b8b82039caa773645ffc80b25362>
- <https://git.kernel.org/stable/c/99bda1ecbd56905f8bd934b9cdccd3bd251192b1>

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-2026-98955>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98955/>. Everything for agents: <https://agentprime.io/llms.txt>.