CVE-2026-31676

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 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-25)

CWE

CWE-362

Published

2026-04-25

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e
• https://git.kernel.org/stable/c/0afdfd4941c1b60a1f5c361760daa970edca60cd
• https://git.kernel.org/stable/c/29b44d904dceb832be880def08b8cb17a0aba91c
• https://git.kernel.org/stable/c/6c3a0fbdafef8316e34ae22333e317a341e737cd
• https://git.kernel.org/stable/c/a1a8efde03a40b6c658d580e96644d9b9a2a0d3a

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