# net/sched: act_ct: avoid modifying shared unconfirmed ct entry

CVE record · `CVE-2026-98441`

- **Identifiers:** `CVE-2026-98441`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 24 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:14 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: `a21b06e7319129994f339ed47f512bbe57b77f5b to before c812bb4aea13d385d048b5b24756aee2edf6f99e` (git)
  - affected: `a21b06e7319129994f339ed47f512bbe57b77f5b to before 2b783c562c3238ff50c34fd7a72a735c9cc73d9a` (git)
  - affected: `a21b06e7319129994f339ed47f512bbe57b77f5b to before 4a04ed91575819fb1859311113e95700b709bec7` (git)
  - affected: `a21b06e7319129994f339ed47f512bbe57b77f5b to before b097d9d7a5b09c8ec5c4c1a08e35ac5a66b06b44` (git)
  - affected: `a21b06e7319129994f339ed47f512bbe57b77f5b to before f85009dfcd65e5969526b0db7a49b5413746e630` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.2`
  - unaffected: `before 6.2` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 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:** 0.0013, the 2nd percentile, on 9 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-2026-98441](https://www.cve.org/CVERecord?id=CVE-2026-98441)
- [NVD: CVE-2026-98441](https://nvd.nist.gov/vuln/detail/CVE-2026-98441)

### References from the CNA

- <https://git.kernel.org/stable/c/c812bb4aea13d385d048b5b24756aee2edf6f99e>
- <https://git.kernel.org/stable/c/2b783c562c3238ff50c34fd7a72a735c9cc73d9a>
- <https://git.kernel.org/stable/c/4a04ed91575819fb1859311113e95700b709bec7>
- <https://git.kernel.org/stable/c/b097d9d7a5b09c8ec5c4c1a08e35ac5a66b06b44>
- <https://git.kernel.org/stable/c/f85009dfcd65e5969526b0db7a49b5413746e630>

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-2026-98441>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98441/>. Everything for agents: <https://agentprime.io/llms.txt>.