{"id":"CVE-2026-63899","summary":"USB: serial: mxuport: fix memory corruption with small endpoint","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: mxuport: fix memory corruption with small endpoint\n\nMake sure that the bulk-out endpoint max packet size is at least eight\nbytes to avoid user-controlled slab corruption should a malicious device\nreport a smaller size.","modified":"2026-07-21T03:47:39.788661172Z","published":"2026-07-19T14:55:08.116Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63899.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/086b858b5f5125bc9d967ea2bd825f83d9f8f29d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2f3661eb2446e1ef593da45e01a3b21a906768ec"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4085f0dbb1ce2251c9a5938d693de6593f0ab2bd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6c0cf56f00f280d72180bb6ce79741bc787a6269"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b40166b4ef96067620a0f248e74ad9658c8f680c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be3a1ed4ae51fa8dde57383277d336ce834f2cd9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ccbec56f2f9af008f1574335cc6a668f16603e47"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e906545641d34fb1a09a65b4b5cfdff40eb09681"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63899.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63899"},{"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":"ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e"},{"fixed":"086b858b5f5125bc9d967ea2bd825f83d9f8f29d"},{"fixed":"2f3661eb2446e1ef593da45e01a3b21a906768ec"},{"fixed":"ccbec56f2f9af008f1574335cc6a668f16603e47"},{"fixed":"be3a1ed4ae51fa8dde57383277d336ce834f2cd9"},{"fixed":"e906545641d34fb1a09a65b4b5cfdff40eb09681"},{"fixed":"6c0cf56f00f280d72180bb6ce79741bc787a6269"},{"fixed":"b40166b4ef96067620a0f248e74ad9658c8f680c"},{"fixed":"4085f0dbb1ce2251c9a5938d693de6593f0ab2bd"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63899.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.14.0"},{"fixed":"5.10.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.93"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.35"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63899.json"}}],"schema_version":"1.7.5"}