{"api_version":"1","generated_at":"2026-08-15T08:45:06+00:00","cve":"CVE-2026-74435","urls":{"html":"https://cve.report/CVE-2026-74435","api":"https://cve.report/api/cve/CVE-2026-74435.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74435","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74435"},"summary":{"title":"rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc\n\nrxrpc_recvmsg_data() calls rxrpc_verify_data() whenever the\nrxrpc_call.rx_dec_buffer is unallocated and assumes that upon\nsuccessful return that rx_dec_buffer must be allocated.\nHowever, rxrpc_verify_data() does not request an allocation if\nthe rxrpc_skb_priv.len is zero.\n\nIn addition, failure to allocate rx_dec_buffer will result in a\ncall to skb_copy_bits() with a NULL destination which can\ntrigger a NULL pointer dereference.\n\nTo prevent these issues rxrpc_verify_data() is modified to\nalways attempt to allocate the rxrpc_call.rx_dec_buffer if it\nis NULL.\n\nThis issue was identified with assistance of a private\nsashiko instance.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:45","updated_at":"2026-08-15 06:22:45"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d3b642cf95d48234590cc91450d8705a9bf6b540","name":"https://git.kernel.org/stable/c/d3b642cf95d48234590cc91450d8705a9bf6b540","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a962bc8508592c4d51092edac68579bd8b18fe44","name":"https://git.kernel.org/stable/c/a962bc8508592c4d51092edac68579bd8b18fe44","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/16c8ae9735c5bd7e54dd7478d6348e0fc860842d","name":"https://git.kernel.org/stable/c/16c8ae9735c5bd7e54dd7478d6348e0fc860842d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6563b4eb38c35d75892445bcf8aacdc29914821c","name":"https://git.kernel.org/stable/c/6563b4eb38c35d75892445bcf8aacdc29914821c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8bbede0afced346b24e4fbde0c68cf12980ba948","name":"https://git.kernel.org/stable/c/8bbede0afced346b24e4fbde0c68cf12980ba948","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74435","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74435","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a05bf6d9e621fa71e89ccebe3047ba45218d7b38 8bbede0afced346b24e4fbde0c68cf12980ba948 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b94a6ccbaf1104dd980150a65fdeb2f69d17d2f5 6563b4eb38c35d75892445bcf8aacdc29914821c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 46cb765e2e5ad52303ea157e10d370bb6b7acbbf d3b642cf95d48234590cc91450d8705a9bf6b540 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d2bc90cf6c75cb96d2ce549be6c35efa3099d25b a962bc8508592c4d51092edac68579bd8b18fe44 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d2bc90cf6c75cb96d2ce549be6c35efa3099d25b 16c8ae9735c5bd7e54dd7478d6348e0fc860842d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c580087743712112778a06d65a4074053072d7bf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.143 6.6.145 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.93 6.12.97 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.35 6.18.40 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0.11 7.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * 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/recvmsg.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8bbede0afced346b24e4fbde0c68cf12980ba948","status":"affected","version":"a05bf6d9e621fa71e89ccebe3047ba45218d7b38","versionType":"git"},{"lessThan":"6563b4eb38c35d75892445bcf8aacdc29914821c","status":"affected","version":"b94a6ccbaf1104dd980150a65fdeb2f69d17d2f5","versionType":"git"},{"lessThan":"d3b642cf95d48234590cc91450d8705a9bf6b540","status":"affected","version":"46cb765e2e5ad52303ea157e10d370bb6b7acbbf","versionType":"git"},{"lessThan":"a962bc8508592c4d51092edac68579bd8b18fe44","status":"affected","version":"d2bc90cf6c75cb96d2ce549be6c35efa3099d25b","versionType":"git"},{"lessThan":"16c8ae9735c5bd7e54dd7478d6348e0fc860842d","status":"affected","version":"d2bc90cf6c75cb96d2ce549be6c35efa3099d25b","versionType":"git"},{"status":"affected","version":"c580087743712112778a06d65a4074053072d7bf","versionType":"git"},{"lessThan":"6.6.145","status":"affected","version":"6.6.143","versionType":"semver"},{"lessThan":"6.12.97","status":"affected","version":"6.12.93","versionType":"semver"},{"lessThan":"6.18.40","status":"affected","version":"6.18.35","versionType":"semver"},{"lessThan":"7.1","status":"affected","version":"7.0.11","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/rxrpc/recvmsg.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.1"},{"lessThan":"7.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.6.143","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.12.93","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.18.35","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"7.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"7.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc\n\nrxrpc_recvmsg_data() calls rxrpc_verify_data() whenever the\nrxrpc_call.rx_dec_buffer is unallocated and assumes that upon\nsuccessful return that rx_dec_buffer must be allocated.\nHowever, rxrpc_verify_data() does not request an allocation if\nthe rxrpc_skb_priv.len is zero.\n\nIn addition, failure to allocate rx_dec_buffer will result in a\ncall to skb_copy_bits() with a NULL destination which can\ntrigger a NULL pointer dereference.\n\nTo prevent these issues rxrpc_verify_data() is modified to\nalways attempt to allocate the rxrpc_call.rx_dec_buffer if it\nis NULL.\n\nThis issue was identified with assistance of a private\nsashiko instance."}],"providerMetadata":{"dateUpdated":"2026-08-15T05:59:34.073Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8bbede0afced346b24e4fbde0c68cf12980ba948"},{"url":"https://git.kernel.org/stable/c/6563b4eb38c35d75892445bcf8aacdc29914821c"},{"url":"https://git.kernel.org/stable/c/d3b642cf95d48234590cc91450d8705a9bf6b540"},{"url":"https://git.kernel.org/stable/c/a962bc8508592c4d51092edac68579bd8b18fe44"},{"url":"https://git.kernel.org/stable/c/16c8ae9735c5bd7e54dd7478d6348e0fc860842d"}],"title":"rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74435","datePublished":"2026-08-15T05:59:34.073Z","dateReserved":"2026-08-15T05:44:03.896Z","dateUpdated":"2026-08-15T05:59:34.073Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:45","lastModifiedDate":"2026-08-15 06:22:45","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74435","Ordinal":"1","Title":"rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc","CVE":"CVE-2026-74435","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74435","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc\n\nrxrpc_recvmsg_data() calls rxrpc_verify_data() whenever the\nrxrpc_call.rx_dec_buffer is unallocated and assumes that upon\nsuccessful return that rx_dec_buffer must be allocated.\nHowever, rxrpc_verify_data() does not request an allocation if\nthe rxrpc_skb_priv.len is zero.\n\nIn addition, failure to allocate rx_dec_buffer will result in a\ncall to skb_copy_bits() with a NULL destination which can\ntrigger a NULL pointer dereference.\n\nTo prevent these issues rxrpc_verify_data() is modified to\nalways attempt to allocate the rxrpc_call.rx_dec_buffer if it\nis NULL.\n\nThis issue was identified with assistance of a private\nsashiko instance.","Type":"Description","Title":"rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc"}]}}}