{"api_version":"1","generated_at":"2026-05-13T12:21:10+00:00","cve":"CVE-2026-43431","urls":{"html":"https://cve.report/CVE-2026-43431","api":"https://cve.report/api/cve/CVE-2026-43431.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43431","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43431"},"summary":{"title":"xhci: Fix NULL pointer dereference when reading portli debugfs files","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxhci: Fix NULL pointer dereference when reading portli debugfs files\n\nMichal reported and debgged a NULL pointer dereference bug in the\nrecently added portli debugfs files\n\nOops is caused when there are more port registers counted in\nxhci->max_ports than ports reported by Supported Protocol capabilities.\nThis is possible if max_ports is more than maximum port number, or\nif there are gaps between ports of different speeds the 'Supported\nProtocol' capabilities.\n\nIn such cases port->rhub will be NULL so we can't reach xhci behind it.\nAdd an explicit NULL check for this case, and print portli in hex\nwithout dereferencing port->rhub.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 15:16:55","updated_at":"2026-05-12 14:10:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/9c8bef223c6e991276188d30d74bdb2cbd8be652","name":"https://git.kernel.org/stable/c/9c8bef223c6e991276188d30d74bdb2cbd8be652","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ae4ff9dead5efa2025eddfcdb29411432bf40a7c","name":"https://git.kernel.org/stable/c/ae4ff9dead5efa2025eddfcdb29411432bf40a7c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43431","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43431","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 384c57ec720597f8104f69082cdd261abb998b80 9c8bef223c6e991276188d30d74bdb2cbd8be652 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 384c57ec720597f8104f69082cdd261abb998b80 ae4ff9dead5efa2025eddfcdb29411432bf40a7c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.9 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":{"cve_year":"2026","cve_id":"43431","cve":"CVE-2026-43431","epss":"0.000180000","percentile":"0.050790000","score_date":"2026-05-12","updated_at":"2026-05-13 00:11:53"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/host/xhci-debugfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9c8bef223c6e991276188d30d74bdb2cbd8be652","status":"affected","version":"384c57ec720597f8104f69082cdd261abb998b80","versionType":"git"},{"lessThan":"ae4ff9dead5efa2025eddfcdb29411432bf40a7c","status":"affected","version":"384c57ec720597f8104f69082cdd261abb998b80","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/host/xhci-debugfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","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":"6.19.9","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxhci: Fix NULL pointer dereference when reading portli debugfs files\n\nMichal reported and debgged a NULL pointer dereference bug in the\nrecently added portli debugfs files\n\nOops is caused when there are more port registers counted in\nxhci->max_ports than ports reported by Supported Protocol capabilities.\nThis is possible if max_ports is more than maximum port number, or\nif there are gaps between ports of different speeds the 'Supported\nProtocol' capabilities.\n\nIn such cases port->rhub will be NULL so we can't reach xhci behind it.\nAdd an explicit NULL check for this case, and print portli in hex\nwithout dereferencing port->rhub."}],"providerMetadata":{"dateUpdated":"2026-05-11T22:24:27.454Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9c8bef223c6e991276188d30d74bdb2cbd8be652"},{"url":"https://git.kernel.org/stable/c/ae4ff9dead5efa2025eddfcdb29411432bf40a7c"}],"title":"xhci: Fix NULL pointer dereference when reading portli debugfs files","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43431","datePublished":"2026-05-08T14:22:03.298Z","dateReserved":"2026-05-01T14:12:56.009Z","dateUpdated":"2026-05-11T22:24:27.454Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 15:16:55","lastModifiedDate":"2026-05-12 14:10:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43431","Ordinal":"1","Title":"xhci: Fix NULL pointer dereference when reading portli debugfs f","CVE":"CVE-2026-43431","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43431","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nxhci: Fix NULL pointer dereference when reading portli debugfs files\n\nMichal reported and debgged a NULL pointer dereference bug in the\nrecently added portli debugfs files\n\nOops is caused when there are more port registers counted in\nxhci->max_ports than ports reported by Supported Protocol capabilities.\nThis is possible if max_ports is more than maximum port number, or\nif there are gaps between ports of different speeds the 'Supported\nProtocol' capabilities.\n\nIn such cases port->rhub will be NULL so we can't reach xhci behind it.\nAdd an explicit NULL check for this case, and print portli in hex\nwithout dereferencing port->rhub.","Type":"Description","Title":"xhci: Fix NULL pointer dereference when reading portli debugfs f"}]}}}