# sctp: clear new_transport when removing a peer

CVE record · `CVE-2026-74586`

- **Identifiers:** `CVE-2026-74586`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 22 Aug 2026
- **Updated:** 16 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 22 Aug 2026, 15:31 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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before c0f973bb5118dd1b146cda3fcc8af6f6057befec` (git)
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before 3b539b317cd052236fed0350364ff1268996ba46` (git)
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before db9d8e3b670f841755bc2018f178472dc6064d27` (git)
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before 31efa656cf6aface26e88f038c14f22ee6ca1500` (git)
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before 291accf36febce751021888de5f15090f4875b56` (git)
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before ca33df36aa0143a1d04f57d2086020c12e7eddb7` (git)
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before 163847552a571bd55094291f4ffcdc1de0f14a7b` (git)
  - affected: `6af29ccc223b0feb6fc6112281c3fa3cdb1afddf to before beb33f8ee1ca83acddb2a5ae80f3d22ec550b4c3` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.2`
  - unaffected: `before 3.2` (semver)
  - unaffected: `5.10.265 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.216 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.183 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.152 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.104 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.45 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.9 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 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

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0050, the 43rd percentile, on 15 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 22 Aug 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-74586](https://www.cve.org/CVERecord?id=CVE-2026-74586)
- [NVD: CVE-2026-74586](https://nvd.nist.gov/vuln/detail/CVE-2026-74586)

### References from the CNA

- <https://git.kernel.org/stable/c/c0f973bb5118dd1b146cda3fcc8af6f6057befec>
- <https://git.kernel.org/stable/c/3b539b317cd052236fed0350364ff1268996ba46>
- <https://git.kernel.org/stable/c/db9d8e3b670f841755bc2018f178472dc6064d27>
- <https://git.kernel.org/stable/c/31efa656cf6aface26e88f038c14f22ee6ca1500>
- <https://git.kernel.org/stable/c/291accf36febce751021888de5f15090f4875b56>
- <https://git.kernel.org/stable/c/ca33df36aa0143a1d04f57d2086020c12e7eddb7>
- <https://git.kernel.org/stable/c/163847552a571bd55094291f4ffcdc1de0f14a7b>
- <https://git.kernel.org/stable/c/beb33f8ee1ca83acddb2a5ae80f3d22ec550b4c3>

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-2026-74586>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-74586/>. Everything for agents: <https://agentprime.io/llms.txt>.