{"schema_version":"1.9.0","id":"CVE-2026-63956","published":"2026-07-19T14:55:47.597Z","modified":"2026-08-12T03:51:38.672319Z","summary":"USB: serial: cypress_m8: fix memory corruption with small endpoint","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: cypress_m8: fix memory corruption with small endpoint\n\nMake sure that the interrupt-out endpoint max packet size is at least\neight bytes to avoid user-controlled slab corruption or NULL-pointer\ndereference should a malicious device report a smaller size.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3416eaa1f8f8d516b77de514e14cf8da256d28fb"},{"fixed":"4fcb22218f0a7229b7ce3b3952fb644def293fa5"},{"fixed":"ad3d1628a46134276546d7a12fedf04be9979158"},{"fixed":"52e18ae0c47c5c89e18fcd8022f287f7cc8802ec"},{"fixed":"4bcaa59f403dbde6328604a500d65ee8d40975d9"},{"fixed":"1ef25704bd3b625fd151c09feee459479f71ee64"},{"fixed":"284105c40fc31fff90cdab8a0377aaeb92f87f0e"},{"fixed":"6c13f3bb652bc8665e709ba07122612586aea648"},{"fixed":"e1a9d791fd66ab2431b9e6f6f835823809869047"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63956.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.26"},{"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-2026-63956.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1ef25704bd3b625fd151c09feee459479f71ee64"},{"type":"WEB","url":"https://git.kernel.org/stable/c/284105c40fc31fff90cdab8a0377aaeb92f87f0e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4bcaa59f403dbde6328604a500d65ee8d40975d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4fcb22218f0a7229b7ce3b3952fb644def293fa5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/52e18ae0c47c5c89e18fcd8022f287f7cc8802ec"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6c13f3bb652bc8665e709ba07122612586aea648"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ad3d1628a46134276546d7a12fedf04be9979158"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e1a9d791fd66ab2431b9e6f6f835823809869047"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63956.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63956"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63956.json"}}