CVE-2026-31676
rxrpc: only handle RESPONSE during service challenge
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 25, 2026 |
| Last Updated | Jun 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
17926a79320afa9b95df6b977b40cca6d8713cea < a1a8efde03a40b6c658d580e96644d9b9a2a0d3a 17926a79320afa9b95df6b977b40cca6d8713cea < 6c3a0fbdafef8316e34ae22333e317a341e737cd 17926a79320afa9b95df6b977b40cca6d8713cea < 0afdfd4941c1b60a1f5c361760daa970edca60cd 17926a79320afa9b95df6b977b40cca6d8713cea < a6bcf8010af093fe04f7100562e9542ab7882585 17926a79320afa9b95df6b977b40cca6d8713cea < 29b44d904dceb832be880def08b8cb17a0aba91c 17926a79320afa9b95df6b977b40cca6d8713cea < d0035e634dae83237ab7f5681eb52b2f65d0ceb8 17926a79320afa9b95df6b977b40cca6d8713cea < 03fd2ef73cb4ffd0af100a95b634af54f474414e 17926a79320afa9b95df6b977b40cca6d8713cea < c43ffdcfdbb5567b1f143556df8a04b4eeea041c
Linux / Linux
2.6.22
References
git.kernel.org: https://git.kernel.org/stable/c/a1a8efde03a40b6c658d580e96644d9b9a2a0d3a git.kernel.org: https://git.kernel.org/stable/c/6c3a0fbdafef8316e34ae22333e317a341e737cd git.kernel.org: https://git.kernel.org/stable/c/0afdfd4941c1b60a1f5c361760daa970edca60cd git.kernel.org: https://git.kernel.org/stable/c/a6bcf8010af093fe04f7100562e9542ab7882585 git.kernel.org: https://git.kernel.org/stable/c/29b44d904dceb832be880def08b8cb17a0aba91c git.kernel.org: https://git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8 git.kernel.org: https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e git.kernel.org: https://git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c