{"api_version":"1","generated_at":"2026-04-25T13:01:25+00:00","cve":"CVE-2026-31676","urls":{"html":"https://cve.report/CVE-2026-31676","api":"https://cve.report/api/cve/CVE-2026-31676.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31676","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31676"},"summary":{"title":"rxrpc: only handle RESPONSE during service challenge","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-25 09:16:01","updated_at":"2026-04-25 09:16:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8","name":"https://git.kernel.org/stable/c/d0035e634dae83237ab7f5681eb52b2f65d0ceb8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e","name":"https://git.kernel.org/stable/c/03fd2ef73cb4ffd0af100a95b634af54f474414e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c","name":"https://git.kernel.org/stable/c/c43ffdcfdbb5567b1f143556df8a04b4eeea041c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31676","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31676","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 17926a79320afa9b95df6b977b40cca6d8713cea d0035e634dae83237ab7f5681eb52b2f65d0ceb8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 17926a79320afa9b95df6b977b40cca6d8713cea 03fd2ef73cb4ffd0af100a95b634af54f474414e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 17926a79320afa9b95df6b977b40cca6d8713cea c43ffdcfdbb5567b1f143556df8a04b4eeea041c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.22","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.22 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.23 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.13 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/rxrpc/conn_event.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d0035e634dae83237ab7f5681eb52b2f65d0ceb8","status":"affected","version":"17926a79320afa9b95df6b977b40cca6d8713cea","versionType":"git"},{"lessThan":"03fd2ef73cb4ffd0af100a95b634af54f474414e","status":"affected","version":"17926a79320afa9b95df6b977b40cca6d8713cea","versionType":"git"},{"lessThan":"c43ffdcfdbb5567b1f143556df8a04b4eeea041c","status":"affected","version":"17926a79320afa9b95df6b977b40cca6d8713cea","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/rxrpc/conn_event.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.22"},{"lessThan":"2.6.22","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.23","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.23","versionStartIncluding":"2.6.22","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.13","versionStartIncluding":"2.6.22","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"2.6.22","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-04-25T08:46:52.285Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31676","datePublished":"2026-04-25T08:46:52.285Z","dateReserved":"2026-03-09T15:48:24.130Z","dateUpdated":"2026-04-25T08:46:52.285Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-25 09:16:01","lastModifiedDate":"2026-04-25 09:16:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31676","Ordinal":"1","Title":"rxrpc: only handle RESPONSE during service challenge","CVE":"CVE-2026-31676","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31676","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"rxrpc: only handle RESPONSE during service challenge"}]}}}