# sctp: fix soft lockup from unpadded ASCONF-ACK parameter iteration

CVE record · `CVE-2026-98123`

- **Identifiers:** `CVE-2026-98123`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 10:36 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before ba54cad229977f4fae6355dbdaf117088414fdd0` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 7d8e7ab6a0665888beee91f7ad77ac805963c4fd` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5fbc6a778d5fce7628821236972596acb18e1065` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 4548d843e7b29f6d150d8caae4e64015fa226b0c` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before abf59d7f6fff23227256e8199aca5ade45758f8b` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3be02999ab9131a4b96eb1eda4ca48b1cea80f03` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 7ba84e2971d208a2d6413a334ec28a8a32cdce0f` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 2cb0b0b1ed69430bf73740377ea0a1c44c50db63` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 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:** 0.0009, the 1st percentile, on 11 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 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98123](https://www.cve.org/CVERecord?id=CVE-2026-98123)
- [NVD: CVE-2026-98123](https://nvd.nist.gov/vuln/detail/CVE-2026-98123)

### References from the CNA

- <https://git.kernel.org/stable/c/ba54cad229977f4fae6355dbdaf117088414fdd0>
- <https://git.kernel.org/stable/c/7d8e7ab6a0665888beee91f7ad77ac805963c4fd>
- <https://git.kernel.org/stable/c/5fbc6a778d5fce7628821236972596acb18e1065>
- <https://git.kernel.org/stable/c/4548d843e7b29f6d150d8caae4e64015fa226b0c>
- <https://git.kernel.org/stable/c/abf59d7f6fff23227256e8199aca5ade45758f8b>
- <https://git.kernel.org/stable/c/3be02999ab9131a4b96eb1eda4ca48b1cea80f03>
- <https://git.kernel.org/stable/c/7ba84e2971d208a2d6413a334ec28a8a32cdce0f>
- <https://git.kernel.org/stable/c/2cb0b0b1ed69430bf73740377ea0a1c44c50db63>

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-2026-98123>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98123/>. Everything for agents: <https://agentprime.io/llms.txt>.