{"api_version":"1","generated_at":"2026-07-23T13:29:50+00:00","cve":"CVE-2026-31608","urls":{"html":"https://cve.report/CVE-2026-31608","api":"https://cve.report/api/cve/CVE-2026-31608.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31608","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31608"},"summary":{"title":"smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()\n\nsmb_direct_flush_send_list() already calls smb_direct_free_sendmsg(),\nso we should not call it again after post_sendmsg()\nmoved it to the batch list.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-24 15:16:40","updated_at":"2026-04-29 20:03:44"},"problem_types":["CWE-415"],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/6968c91fab05b8fc4d6700e0cf34472bb422df25","name":"https://git.kernel.org/stable/c/6968c91fab05b8fc4d6700e0cf34472bb422df25","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/84ff995ae826aa6bbcc6c7b9ea569ff67c021d72","name":"https://git.kernel.org/stable/c/84ff995ae826aa6bbcc6c7b9ea569ff67c021d72","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/830de6eeb9db4cb7e758201fb99328ef4ca4b032","name":"https://git.kernel.org/stable/c/830de6eeb9db4cb7e758201fb99328ef4ca4b032","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2ba03f46132b0d1a7bafb86e1ef61951a2254023","name":"https://git.kernel.org/stable/c/2ba03f46132b0d1a7bafb86e1ef61951a2254023","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31608","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31608","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7 6968c91fab05b8fc4d6700e0cf34472bb422df25 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 79242e7b6bc63efec28b7c235bc320806afce6c0 2ba03f46132b0d1a7bafb86e1ef61951a2254023 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 34abd408c8ba24d7c97bd02ba874d8c714f49db1 830de6eeb9db4cb7e758201fb99328ef4ca4b032 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 34abd408c8ba24d7c97bd02ba874d8c714f49db1 84ff995ae826aa6bbcc6c7b9ea569ff67c021d72 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.24 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.14 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.1 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"31608","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"31608","cve":"CVE-2026-31608","epss":"0.000180000","percentile":"0.046080000","score_date":"2026-04-27","updated_at":"2026-04-28 00:06:44"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/transport_rdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6968c91fab05b8fc4d6700e0cf34472bb422df25","status":"affected","version":"5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7","versionType":"git"},{"lessThan":"2ba03f46132b0d1a7bafb86e1ef61951a2254023","status":"affected","version":"79242e7b6bc63efec28b7c235bc320806afce6c0","versionType":"git"},{"lessThan":"830de6eeb9db4cb7e758201fb99328ef4ca4b032","status":"affected","version":"34abd408c8ba24d7c97bd02ba874d8c714f49db1","versionType":"git"},{"lessThan":"84ff995ae826aa6bbcc6c7b9ea569ff67c021d72","status":"affected","version":"34abd408c8ba24d7c97bd02ba874d8c714f49db1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/transport_rdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.0"},{"lessThan":"7.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.24","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.1","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.24","versionStartIncluding":"6.18.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.14","versionStartIncluding":"6.19.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.1","versionStartIncluding":"7.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"7.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()\n\nsmb_direct_flush_send_list() already calls smb_direct_free_sendmsg(),\nso we should not call it again after post_sendmsg()\nmoved it to the batch list."}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-04-27T14:04:21.158Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6968c91fab05b8fc4d6700e0cf34472bb422df25"},{"url":"https://git.kernel.org/stable/c/2ba03f46132b0d1a7bafb86e1ef61951a2254023"},{"url":"https://git.kernel.org/stable/c/830de6eeb9db4cb7e758201fb99328ef4ca4b032"},{"url":"https://git.kernel.org/stable/c/84ff995ae826aa6bbcc6c7b9ea569ff67c021d72"}],"title":"smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31608","datePublished":"2026-04-24T14:42:30.137Z","dateReserved":"2026-03-09T15:48:24.122Z","dateUpdated":"2026-04-27T14:04:21.158Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-24 15:16:40","lastModifiedDate":"2026-04-29 20:03:44","problem_types":["CWE-415"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.24","matchCriteriaId":"E7BFA239-2F39-4B24-92AA-6F60AA187C18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.14","matchCriteriaId":"D6A8A074-BBF4-4803-ABED-519A839435BB"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.0.1","matchCriteriaId":"9B5888AB-7403-4335-89E4-21CC0B48366A"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31608","Ordinal":"1","Title":"smb: server: avoid double-free in smb_direct_free_sendmsg after ","CVE":"CVE-2026-31608","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31608","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()\n\nsmb_direct_flush_send_list() already calls smb_direct_free_sendmsg(),\nso we should not call it again after post_sendmsg()\nmoved it to the batch list.","Type":"Description","Title":"smb: server: avoid double-free in smb_direct_free_sendmsg after "}]}}}