{"id":"CVE-2022-50876","state":"PUBLISHED","title":"usb: musb: Fix musb_gadget.c rxstate overflow bug","description":"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->length > musb_ep->packet_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request->buf which may cause request->buf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request->length - request->actual, fifocnt);","publishedAt":"2025-12-30T12:23:16.790Z","updatedAt":"2026-05-11T19:26:50.207Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"826f84ab04a5cafe484ea9c2c85a3930068e5cb7","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"a1008c8b9f357691ce6a8fdb8f157aecb2d79167","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"7c80f3a918ba9aa26fb699ee887064ec3af0396a","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"d6afcab1b48f4051211c50145b9e91be3b1b42c9","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"acf0006f2b2b2ca672988875fd154429aafb2a9b","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"3c84c7f592c4ba38f54ddaddd0115acc443025db","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"523313881f0aa5cbbdb548ce575b6e58b202bd76","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"eea4c860c3b366369eff0489d94ee4f0571d467d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/musb/musb_gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.3","versionType":"semver"},{"version":"4.9.331","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.296","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.262","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.220","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.150","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.75","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.17","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/musb/musb_gadget.c"]}],"references":["https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7","https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167","https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a","https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9","https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b","https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db","https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96","https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76","https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50876.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50876","state":"PUBLISHED","datePublished":"2025-12-30T12:23:16.790Z","dateUpdated":"2026-05-11T19:26:50.207Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:07.137Z"},"containers":{"cna":{"title":"usb: musb: Fix musb_gadget.c rxstate overflow bug","descriptions":[{"lang":"en","value":"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->length > musb_ep->packet_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request->buf which may cause request->buf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request->length - request->actual, fifocnt);"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"826f84ab04a5cafe484ea9c2c85a3930068e5cb7","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"a1008c8b9f357691ce6a8fdb8f157aecb2d79167","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"7c80f3a918ba9aa26fb699ee887064ec3af0396a","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"d6afcab1b48f4051211c50145b9e91be3b1b42c9","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"acf0006f2b2b2ca672988875fd154429aafb2a9b","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"3c84c7f592c4ba38f54ddaddd0115acc443025db","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"523313881f0aa5cbbdb548ce575b6e58b202bd76","versionType":"git"},{"version":"03840fad004ce8a56bc8b3bb60a2df10f6f9481e","status":"affected","lessThan":"eea4c860c3b366369eff0489d94ee4f0571d467d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/musb/musb_gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.3","versionType":"semver"},{"version":"4.9.331","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.296","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.262","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.220","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.150","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.75","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.17","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/musb/musb_gadget.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7"},{"url":"https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167"},{"url":"https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a"},{"url":"https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9"},{"url":"https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b"},{"url":"https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db"},{"url":"https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96"},{"url":"https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76"},{"url":"https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:26:50.207Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.9.331"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.14.296"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.19.262"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.4.220"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.10.150"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.15.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.19.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.0.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2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