CVE-2026-31676
Last modified
CVE-2026-31676 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 2.6.22, < 6.6.136 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.84 | — |
| Linux | Linux Kernel | >= 6.13, < 6.18.23 | — |
| Linux | Linux Kernel | >= 6.19, < 6.19.13 | — |
| Linux | Linux Kernel | 7.0 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-31676?
How severe is CVE-2026-31676?
How do I fix CVE-2026-31676?
Are you affected by CVE-2026-31676?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST