# tls: rx: restore msg_iter before TLS 1.3 optimistic retry

CVE record · `CVE-2026-74611`

- **Identifiers:** `CVE-2026-74611`
- **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:** 30 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: `ce61327ce989b63c0bd1cc7afee00e218ee696ac to before 97004f3c17371ee1b259887298711e0604666688` (git)
  - affected: `ce61327ce989b63c0bd1cc7afee00e218ee696ac to before c71bacacd59166adbea423a04e7474b0e8245b84` (git)
  - affected: `ce61327ce989b63c0bd1cc7afee00e218ee696ac to before 3c4e21b1bf8e666a1c141e0f5813ece929570deb` (git)
  - affected: `ce61327ce989b63c0bd1cc7afee00e218ee696ac to before 68787940274ec89f41dc91b1a68ee1a16a90735f` (git)
  - affected: `ce61327ce989b63c0bd1cc7afee00e218ee696ac to before 3c837266a734e2a22b24d2d567404a501d405835` (git)
  - affected: `ce61327ce989b63c0bd1cc7afee00e218ee696ac to before 1c8629651cb54f7b51db8fc0b1a9944e4a4b0f5e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.0`
  - unaffected: `before 6.0` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 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:** 0.0049, the 42nd 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-2026-74611](https://www.cve.org/CVERecord?id=CVE-2026-74611)
- [NVD: CVE-2026-74611](https://nvd.nist.gov/vuln/detail/CVE-2026-74611)

### References from the CNA

- <https://git.kernel.org/stable/c/97004f3c17371ee1b259887298711e0604666688>
- <https://git.kernel.org/stable/c/c71bacacd59166adbea423a04e7474b0e8245b84>
- <https://git.kernel.org/stable/c/3c4e21b1bf8e666a1c141e0f5813ece929570deb>
- <https://git.kernel.org/stable/c/68787940274ec89f41dc91b1a68ee1a16a90735f>
- <https://git.kernel.org/stable/c/3c837266a734e2a22b24d2d567404a501d405835>
- <https://git.kernel.org/stable/c/1c8629651cb54f7b51db8fc0b1a9944e4a4b0f5e>

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-2026-74611>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-74611/>. Everything for agents: <https://agentprime.io/llms.txt>.