{"id":"AZL-88412","summary":"CVE-2026-23679 affecting package libusb1 1.0.27-4","details":"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.","modified":"2026-08-30T05:24:52Z","published":"2026-05-27T14:16:44Z","upstream":["CVE-2026-23679"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23679"}],"affected":[{"package":{"name":"libusb1","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/libusb1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.0.27-4"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-88412.json"}}],"schema_version":"1.9.0"}