{"id":"CVE-2022-50876","summary":"usb: musb: Fix musb_gadget.c rxstate overflow bug","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: Fix musb_gadget.c rxstate overflow bug\n\nThe usb function device call musb_gadget_queue() adds the passed\nrequest to musb_ep::req_list,If the (request-\u003elength \u003e musb_ep-\u003epacket_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request-\u003ebuf which may cause request-\u003ebuf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request-\u003elength - request-\u003eactual, fifocnt);","modified":"2026-04-02T08:28:48.916446Z","published":"2025-12-30T12:23:16.790Z","related":["SUSE-SU-2026:0263-1","SUSE-SU-2026:0317-1","SUSE-SU-2026:0350-1","SUSE-SU-2026:0369-1","SUSE-SU-2026:0411-1","SUSE-SU-2026:0617-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50876.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db"},{"type":"WEB","url":"https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96"},{"type":"WEB","url":"https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50876.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50876"},{"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":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e"},{"fixed":"826f84ab04a5cafe484ea9c2c85a3930068e5cb7"},{"fixed":"a1008c8b9f357691ce6a8fdb8f157aecb2d79167"},{"fixed":"7c80f3a918ba9aa26fb699ee887064ec3af0396a"},{"fixed":"d6afcab1b48f4051211c50145b9e91be3b1b42c9"},{"fixed":"acf0006f2b2b2ca672988875fd154429aafb2a9b"},{"fixed":"3c84c7f592c4ba38f54ddaddd0115acc443025db"},{"fixed":"a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96"},{"fixed":"523313881f0aa5cbbdb548ce575b6e58b202bd76"},{"fixed":"eea4c860c3b366369eff0489d94ee4f0571d467d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50876.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.3.0"},{"fixed":"4.9.331"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.14.296"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.262"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.220"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.150"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.17"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.20.0"},{"fixed":"6.0.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50876.json"}}],"schema_version":"1.7.5"}