Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.22, < 6.6.136 |
References
- https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414ePatch
- https://git.kernel.org/stable/c/29b44d904dceb832be880def08b8cb17a0aba91cPatch
- https://git.kernel.org/stable/c/a6bcf8010af093fe04f7100562e9542ab7882585Patch
- https://git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041cPatch
- https://git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8Patch
FAQ
What is CVE-2026-31676?
CVE-2026-31676 is a vulnerability with a CVSS score of 7.5 (HIGH). 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_...
How severe is CVE-2026-31676?
CVE-2026-31676 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31676?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.