# CVE-2026-31676

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## Description

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: only handle RESPONSE during service challenge

Only process RESPONSE packets while the service connection is still in
RXRPC_CONN_SERVICE_CHALLENGING. Check that state under state_lock before
running response verification and security initialization, then use a local
secured flag to decide whether to queue the secured-connection work after
the state transition. This keeps duplicate or late RESPONSE packets from
re-running the setup path and removes the unlocked post-transition state
test.

## Key facts

- **CVE ID:** CVE-2026-31676
- **Published:** 2026-04-25
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** NVD-CWE-noinfo

## Affected products

- `linux:linux_kernel`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-31676

## Citation

> AI Analytics. CVE-2026-31676. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-31676. Derived from NIST NVD. Licensed CC0.

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