# net/packet: prevent TX_RING byte count overflow

CVE record · `CVE-2026-98850`

- **Identifiers:** `CVE-2026-98850`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:50 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: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before 1e6ee93cea4b77253b1b81eb5759899f959ebee3` (git)
  - affected: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before 70fefff0801d4c5405e515592d1e7ad1351530cd` (git)
  - affected: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before 4848c175b5984e6358bcca794ac1dee4d527efcc` (git)
  - affected: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before ae169d318d5d23bac76ece90a7e2b5cb760ed043` (git)
  - affected: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before be12b221c0301111eeb023be04add3c6ad7c21fe` (git)
  - affected: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before 69ca64bbb528898916f309552053c32a04a36ebc` (git)
  - affected: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before 9fd63d284e251332f4874ef9023cde472f315f86` (git)
  - affected: `69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to before 2cf81fc9505b148b1b70068303ea6ea4b1212403` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.31`
  - unaffected: `before 2.6.31` (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: `6.18.56 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.10 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:** 0.0020, the 10th 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98850](https://www.cve.org/CVERecord?id=CVE-2026-98850)
- [NVD: CVE-2026-98850](https://nvd.nist.gov/vuln/detail/CVE-2026-98850)

### References from the CNA

- <https://git.kernel.org/stable/c/1e6ee93cea4b77253b1b81eb5759899f959ebee3>
- <https://git.kernel.org/stable/c/70fefff0801d4c5405e515592d1e7ad1351530cd>
- <https://git.kernel.org/stable/c/4848c175b5984e6358bcca794ac1dee4d527efcc>
- <https://git.kernel.org/stable/c/ae169d318d5d23bac76ece90a7e2b5cb760ed043>
- <https://git.kernel.org/stable/c/be12b221c0301111eeb023be04add3c6ad7c21fe>
- <https://git.kernel.org/stable/c/69ca64bbb528898916f309552053c32a04a36ebc>
- <https://git.kernel.org/stable/c/9fd63d284e251332f4874ef9023cde472f315f86>
- <https://git.kernel.org/stable/c/2cf81fc9505b148b1b70068303ea6ea4b1212403>

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-2026-98850>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98850/>. Everything for agents: <https://agentprime.io/llms.txt>.