{"id":"CVE-2026-23679","state":"PUBLISHED","title":"libusb < 1.0.30 NULL Pointer Dereference in parse_interface()","description":"libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array. Attackers can exploit this flaw through libusb_get_active_config_descriptor or libusb_get_config_descriptor by providing crafted descriptors via virtualized USB passthrough, file-based descriptor parsing, or network sources, causing any application iterating over endpoints to dereference a NULL endpoint pointer and crash.","publishedAt":"2026-05-27T13:21:37.035Z","updatedAt":"2026-07-14T15:53:32.218Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["libusb libusb"],"affected":[{"vendor":"libusb","product":"libusb","packageURL":"pkg:github/libusb/libusb","defaultStatus":"affected","versions":[{"version":"0","status":"affected","lessThan":"1.0.30","versionType":"semver"}],"repo":"https://github.com/libusb/libusb"}],"references":["https://github.com/libusb/libusb/releases/tag/v1.0.30","https://github.com/libusb/libusb/issues/1813","https://github.com/libusb/libusb/pull/1814","https://github.com/libusb/libusb/commit/578ab76b4c434f8b204137ab6d7310689c7a9704","https://www.vulncheck.com/advisories/libusb-null-pointer-dereference-in-parse-interface"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23679.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23679","state":"PUBLISHED","datePublished":"2026-05-27T13:21:37.035Z","dateUpdated":"2026-07-14T15:53:32.218Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-01-14T17:13:44.903Z"},"containers":{"cna":{"title":"libusb < 1.0.30 NULL Pointer Dereference in parse_interface()","descriptions":[{"lang":"en","value":"libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array. 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