{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31676","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.130Z","datePublished":"2026-04-25T08:46:52.285Z","dateUpdated":"2026-05-11T22:13:29.144Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:13:29.144Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: only handle RESPONSE during service challenge\n\nOnly process RESPONSE packets while the service connection is still in\nRXRPC_CONN_SERVICE_CHALLENGING. Check that state under state_lock before\nrunning response verification and security initialization, then use a local\nsecured flag to decide whether to queue the secured-connection work after\nthe state transition. This keeps duplicate or late RESPONSE packets from\nre-running the setup path and removes the unlocked post-transition state\ntest."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/rxrpc/conn_event.c"],"versions":[{"version":"17926a79320afa9b95df6b977b40cca6d8713cea","lessThan":"a6bcf8010af093fe04f7100562e9542ab7882585","status":"affected","versionType":"git"},{"version":"17926a79320afa9b95df6b977b40cca6d8713cea","lessThan":"29b44d904dceb832be880def08b8cb17a0aba91c","status":"affected","versionType":"git"},{"version":"17926a79320afa9b95df6b977b40cca6d8713cea","lessThan":"d0035e634dae83237ab7f5681eb52b2f65d0ceb8","status":"affected","versionType":"git"},{"version":"17926a79320afa9b95df6b977b40cca6d8713cea","lessThan":"03fd2ef73cb4ffd0af100a95b634af54f474414e","status":"affected","versionType":"git"},{"version":"17926a79320afa9b95df6b977b40cca6d8713cea","lessThan":"c43ffdcfdbb5567b1f143556df8a04b4eeea041c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/rxrpc/conn_event.c"],"versions":[{"version":"2.6.22","status":"affected"},{"version":"0","lessThan":"2.6.22","status":"unaffected","versionType":"semver"},{"version":"6.6.136","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.84","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.23","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.13","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.6.136"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.12.84"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.18.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.19.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a6bcf8010af093fe04f7100562e9542ab7882585"},{"url":"https://git.kernel.org/stable/c/29b44d904dceb832be880def08b8cb17a0aba91c"},{"url":"https://git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8"},{"url":"https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e"},{"url":"https://git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c"}],"title":"rxrpc: only handle RESPONSE during service challenge","x_generator":{"engine":"bippy-1.2.0"}}}}