# rxrpc: Fix re-decryption of RESPONSE packets

CVE record · `CVE-2026-45988`

- **Identifiers:** `CVE-2026-45988`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Weakness (CWE):** [CWE-682](https://cwe.mitre.org/data/definitions/682.html)
- **Tags:** [CWE-682](https://agentprime.io/advisories/tag/cwe-682.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 27 May 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 27 May 2026, 12:55 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: `17926a79320afa9b95df6b977b40cca6d8713cea to before d61482be4aae1835b78875761206241835a7510e` (git)
  - affected: `17926a79320afa9b95df6b977b40cca6d8713cea to before 7b89868305052b94a91b708c462bc2281fa42a4a` (git)
  - affected: `17926a79320afa9b95df6b977b40cca6d8713cea to before 76cb9a2d252274adfae6e293a292434631a7d472` (git)
  - affected: `17926a79320afa9b95df6b977b40cca6d8713cea to before f55b383070170e988e4dec28be2af1714d258521` (git)
  - affected: `17926a79320afa9b95df6b977b40cca6d8713cea to before 0422e7a4883f25101903f3e8105c0808aa5f4ce9` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.22`
  - unaffected: `before 2.6.22` (semver)
  - unaffected: `6.6.140 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.86 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.27 to 6.18.*, inclusive` (semver)
  - unaffected: `7.0.4 to 7.0.*, inclusive` (semver)
  - unaffected: `7.1 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:** 0.0046, the 39th percentile, on 5 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 27 May 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-45988](https://www.cve.org/CVERecord?id=CVE-2026-45988)
- [NVD: CVE-2026-45988](https://nvd.nist.gov/vuln/detail/CVE-2026-45988)

### References from the CNA

- <https://git.kernel.org/stable/c/d61482be4aae1835b78875761206241835a7510e>
- <https://git.kernel.org/stable/c/7b89868305052b94a91b708c462bc2281fa42a4a>
- <https://git.kernel.org/stable/c/76cb9a2d252274adfae6e293a292434631a7d472>
- <https://git.kernel.org/stable/c/f55b383070170e988e4dec28be2af1714d258521>
- <https://git.kernel.org/stable/c/0422e7a4883f25101903f3e8105c0808aa5f4ce9>

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-2026-45988>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-45988/>. Everything for agents: <https://agentprime.io/llms.txt>.