{"id":"CVE-2022-50034","state":"PUBLISHED","title":"usb: cdns3 fix use-after-free at workaround 2","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3 fix use-after-free at workaround 2\n\nBUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac\n\ncdns3_wa2_remove_old_request()\n{\n\t...\n\tkfree(priv_req->request.buf);\n\tcdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request);\n\tlist_del_init(&priv_req->list);\n\t^^^ use after free\n\t...\n}\n\ncdns3_gadget_ep_free_request() free the space pointed by priv_req,\nbut priv_req is used in the following list_del_init().\n\nThis patch move list_del_init() before cdns3_gadget_ep_free_request().","publishedAt":"2025-06-18T11:01:36.435Z","updatedAt":"2026-08-15T12:23:09.956Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"e65d9b7147d7be3504893ca7dfb85286bda83d40","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"6d7ac60098b206d0472475b666cb09d556bec03d","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"6fd50446e7c9a98b4bcf96815f5c9602a16ea472","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"7d602f30149a117eea260208b1661bc404c21dfd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/cdns3/cdns3-gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.4.211","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.138","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/cdns3/cdns3-gadget.c"]}],"references":["https://git.kernel.org/stable/c/e65d9b7147d7be3504893ca7dfb85286bda83d40","https://git.kernel.org/stable/c/6d7ac60098b206d0472475b666cb09d556bec03d","https://git.kernel.org/stable/c/c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a","https://git.kernel.org/stable/c/6fd50446e7c9a98b4bcf96815f5c9602a16ea472","https://git.kernel.org/stable/c/7d602f30149a117eea260208b1661bc404c21dfd"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50034.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50034","state":"PUBLISHED","datePublished":"2025-06-18T11:01:36.435Z","dateUpdated":"2026-08-15T12:23:09.956Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-06-18T10:57:27.396Z"},"containers":{"cna":{"title":"usb: cdns3 fix use-after-free at workaround 2","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3 fix use-after-free at workaround 2\n\nBUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac\n\ncdns3_wa2_remove_old_request()\n{\n\t...\n\tkfree(priv_req->request.buf);\n\tcdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request);\n\tlist_del_init(&priv_req->list);\n\t^^^ use after free\n\t...\n}\n\ncdns3_gadget_ep_free_request() free the space pointed by priv_req,\nbut priv_req is used in the following list_del_init().\n\nThis patch move list_del_init() before cdns3_gadget_ep_free_request()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"e65d9b7147d7be3504893ca7dfb85286bda83d40","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"6d7ac60098b206d0472475b666cb09d556bec03d","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"6fd50446e7c9a98b4bcf96815f5c9602a16ea472","versionType":"git"},{"version":"6bbf87a131edd39040974f3843ff97e89310ebde","status":"affected","lessThan":"7d602f30149a117eea260208b1661bc404c21dfd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/cdns3/cdns3-gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.4.211","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.138","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/cdns3/cdns3-gadget.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e65d9b7147d7be3504893ca7dfb85286bda83d40"},{"url":"https://git.kernel.org/stable/c/6d7ac60098b206d0472475b666cb09d556bec03d"},{"url":"https://git.kernel.org/stable/c/c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a"},{"url":"https://git.kernel.org/stable/c/6fd50446e7c9a98b4bcf96815f5c9602a16ea472"},{"url":"https://git.kernel.org/stable/c/7d602f30149a117eea260208b1661bc404c21dfd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-15T12:23:09.956Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.4.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.10.138"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.15.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}