{"api_version":"1","generated_at":"2026-08-24T20:45:12+00:00","cve":"CVE-2026-74585","urls":{"html":"https://cve.report/CVE-2026-74585","api":"https://cve.report/api/cve/CVE-2026-74585.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74585","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74585"},"summary":{"title":"thunderbolt: Bound the DROM dual link port number before indexing sw->ports","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Bound the DROM dual link port number before indexing sw->ports\n\ntb_drom_parse_entry_port() validates the device-supplied header->index\nagainst sw->config.max_port_number before indexing sw->ports[], but the\nsibling field entry->dual_link_port_nr -- a 6-bit value also read from\nthe DROM -- indexes the same array with no such check. A malicious or\nmalformed Thunderbolt device can set dual_link_port_nr beyond the\nallocated sw->ports[] (max_port_number + 1 entries), producing an\nout-of-bounds tb_port pointer that is stored and later dereferenced.\n\nReject a port entry whose dual_link_port_nr exceeds max_port_number,\nthe same bound already applied to header->index.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:30","updated_at":"2026-08-22 16:16:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f32c3a9a77cfb50934a60b05d5407649af062535","name":"https://git.kernel.org/stable/c/f32c3a9a77cfb50934a60b05d5407649af062535","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b98e1e28bd95b0fa33164eec1e763d26c7058b39","name":"https://git.kernel.org/stable/c/b98e1e28bd95b0fa33164eec1e763d26c7058b39","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d6764992f17b23d91ff93ce905ab53c2aa7191f0","name":"https://git.kernel.org/stable/c/d6764992f17b23d91ff93ce905ab53c2aa7191f0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c","name":"https://git.kernel.org/stable/c/6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f28066057134aa9294caa597b670daf505ad9dce","name":"https://git.kernel.org/stable/c/f28066057134aa9294caa597b670daf505ad9dce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d3c212b70633332ab71672aa2bc6af257d2ec83","name":"https://git.kernel.org/stable/c/3d3c212b70633332ab71672aa2bc6af257d2ec83","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/50f0c8dd8c3390f851cfb97ca13116f9ee6469d1","name":"https://git.kernel.org/stable/c/50f0c8dd8c3390f851cfb97ca13116f9ee6469d1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/40d2ffb74094cf36edbe05855566a4c58b6ce808","name":"https://git.kernel.org/stable/c/40d2ffb74094cf36edbe05855566a4c58b6ce808","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74585","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74585","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 3d3c212b70633332ab71672aa2bc6af257d2ec83 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 b98e1e28bd95b0fa33164eec1e763d26c7058b39 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 50f0c8dd8c3390f851cfb97ca13116f9ee6469d1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.216 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.183 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.152 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.104 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.45 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.9 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"74585","cve":"CVE-2026-74585","epss":"0.002200000","percentile":"0.127380000","score_date":"2026-08-23","updated_at":"2026-08-24 00:11:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/thunderbolt/eeprom.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"},{"lessThan":"3d3c212b70633332ab71672aa2bc6af257d2ec83","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"},{"lessThan":"b98e1e28bd95b0fa33164eec1e763d26c7058b39","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"},{"lessThan":"50f0c8dd8c3390f851cfb97ca13116f9ee6469d1","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"},{"lessThan":"f28066057134aa9294caa597b670daf505ad9dce","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"},{"lessThan":"40d2ffb74094cf36edbe05855566a4c58b6ce808","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"},{"lessThan":"f32c3a9a77cfb50934a60b05d5407649af062535","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"},{"lessThan":"d6764992f17b23d91ff93ce905ab53c2aa7191f0","status":"affected","version":"cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/thunderbolt/eeprom.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.17"},{"lessThan":"3.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.265","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.216","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.152","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.104","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.45","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.265","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.216","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.183","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.152","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.104","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.45","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.9","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"3.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Bound the DROM dual link port number before indexing sw->ports\n\ntb_drom_parse_entry_port() validates the device-supplied header->index\nagainst sw->config.max_port_number before indexing sw->ports[], but the\nsibling field entry->dual_link_port_nr -- a 6-bit value also read from\nthe DROM -- indexes the same array with no such check. A malicious or\nmalformed Thunderbolt device can set dual_link_port_nr beyond the\nallocated sw->ports[] (max_port_number + 1 entries), producing an\nout-of-bounds tb_port pointer that is stored and later dereferenced.\n\nReject a port entry whose dual_link_port_nr exceeds max_port_number,\nthe same bound already applied to header->index."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:31:38.339Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c"},{"url":"https://git.kernel.org/stable/c/3d3c212b70633332ab71672aa2bc6af257d2ec83"},{"url":"https://git.kernel.org/stable/c/b98e1e28bd95b0fa33164eec1e763d26c7058b39"},{"url":"https://git.kernel.org/stable/c/50f0c8dd8c3390f851cfb97ca13116f9ee6469d1"},{"url":"https://git.kernel.org/stable/c/f28066057134aa9294caa597b670daf505ad9dce"},{"url":"https://git.kernel.org/stable/c/40d2ffb74094cf36edbe05855566a4c58b6ce808"},{"url":"https://git.kernel.org/stable/c/f32c3a9a77cfb50934a60b05d5407649af062535"},{"url":"https://git.kernel.org/stable/c/d6764992f17b23d91ff93ce905ab53c2aa7191f0"}],"title":"thunderbolt: Bound the DROM dual link port number before indexing sw->ports","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74585","datePublished":"2026-08-22T15:31:38.339Z","dateReserved":"2026-08-15T05:44:03.918Z","dateUpdated":"2026-08-22T15:31:38.339Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:30","lastModifiedDate":"2026-08-22 16:16:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74585","Ordinal":"1","Title":"thunderbolt: Bound the DROM dual link port number before indexin","CVE":"CVE-2026-74585","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74585","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Bound the DROM dual link port number before indexing sw->ports\n\ntb_drom_parse_entry_port() validates the device-supplied header->index\nagainst sw->config.max_port_number before indexing sw->ports[], but the\nsibling field entry->dual_link_port_nr -- a 6-bit value also read from\nthe DROM -- indexes the same array with no such check. A malicious or\nmalformed Thunderbolt device can set dual_link_port_nr beyond the\nallocated sw->ports[] (max_port_number + 1 entries), producing an\nout-of-bounds tb_port pointer that is stored and later dereferenced.\n\nReject a port entry whose dual_link_port_nr exceeds max_port_number,\nthe same bound already applied to header->index.","Type":"Description","Title":"thunderbolt: Bound the DROM dual link port number before indexin"}]}}}