rxrpc: only handle RESPONSE during service challenge

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Summary

CVECVE-2026-31676
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-25 09:16:01 UTC
Updated2026-04-25 09:16:01 UTC
DescriptionIn 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 Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 17926a79320afa9b95df6b977b40cca6d8713cea d0035e634dae83237ab7f5681eb52b2f65d0ceb8 git Not specified
CNA Linux Linux affected 17926a79320afa9b95df6b977b40cca6d8713cea 03fd2ef73cb4ffd0af100a95b634af54f474414e git Not specified
CNA Linux Linux affected 17926a79320afa9b95df6b977b40cca6d8713cea c43ffdcfdbb5567b1f143556df8a04b4eeea041c git Not specified
CNA Linux Linux affected 2.6.22 Not specified
CNA Linux Linux unaffected 2.6.22 semver Not specified
CNA Linux Linux unaffected 6.18.23 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.13 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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