# tls: fix handling of zero-length records on the rx_list

CVE record · `CVE-2025-39682`

- **Identifiers:** `CVE-2025-39682`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: KEV, CVSS 9+
- **CNA:** Linux
- **Weakness (CWE):** [CWE-754](https://cwe.mitre.org/data/definitions/754.html)
- **Tags:** [CWE-754](https://agentprime.io/advisories/tag/cwe-754.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 5 Sept 2025
- **Updated:** 7 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 5 Sept 2025, 17:20 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:

- In CISA’s KEV catalogue since 18 Sept 2026: it is known to be exploited.
- 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: `84c61fe1a75b4255df1e1e7c054c9e6d048da417 to before 2902c3ebcca52ca845c03182000e8d71d3a5196f` (git)
  - affected: `84c61fe1a75b4255df1e1e7c054c9e6d048da417 to before c09dd3773b5950e9cfb6c9b9a5f6e36d06c62677` (git)
  - affected: `84c61fe1a75b4255df1e1e7c054c9e6d048da417 to before 3439c15ae91a517cf3c650ea15a8987699416ad9` (git)
  - affected: `84c61fe1a75b4255df1e1e7c054c9e6d048da417 to before 29c0ce3c8cdb6dc5d61139c937f34cb888a6f42e` (git)
  - affected: `84c61fe1a75b4255df1e1e7c054c9e6d048da417 to before 62708b9452f8eb77513115b17c4f8d1a22ebf843` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.0`
  - unaffected: `before 6.0` (semver)
  - unaffected: `6.1.149 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.103 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.44 to 6.12.*, inclusive` (semver)
  - unaffected: `6.16.4 to 6.16.*, inclusive` (semver)
  - unaffected: `6.17 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:** Listed since 18 Sept 2026: known to be exploited.
- **EPSS:** 0.032, the 88th percentile, on 7 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 5 Sept 2025. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2025-39682](https://www.cve.org/CVERecord?id=CVE-2025-39682)
- [NVD: CVE-2025-39682](https://nvd.nist.gov/vuln/detail/CVE-2025-39682)

### References from the CNA

- <https://git.kernel.org/stable/c/2902c3ebcca52ca845c03182000e8d71d3a5196f>
- <https://git.kernel.org/stable/c/c09dd3773b5950e9cfb6c9b9a5f6e36d06c62677>
- <https://git.kernel.org/stable/c/3439c15ae91a517cf3c650ea15a8987699416ad9>
- <https://git.kernel.org/stable/c/29c0ce3c8cdb6dc5d61139c937f34cb888a6f42e>
- <https://git.kernel.org/stable/c/62708b9452f8eb77513115b17c4f8d1a22ebf843>

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-2025-39682>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2025-39682/>. Everything for agents: <https://agentprime.io/llms.txt>.