{"id":"CVE-2026-43431","summary":"xhci: Fix NULL pointer dereference when reading portli debugfs files","details":"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-\u003emax_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-\u003erhub 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-\u003erhub.","modified":"2026-07-08T08:13:30.286176892Z","published":"2026-05-08T14:22:03.298Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43431.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/9c8bef223c6e991276188d30d74bdb2cbd8be652"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae4ff9dead5efa2025eddfcdb29411432bf40a7c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43431.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43431"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"384c57ec720597f8104f69082cdd261abb998b80"},{"fixed":"9c8bef223c6e991276188d30d74bdb2cbd8be652"},{"fixed":"ae4ff9dead5efa2025eddfcdb29411432bf40a7c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43431.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43431.json"}}],"schema_version":"1.7.5"}