{"id":"CVE-2025-40314","state":"PUBLISHED","title":"usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget\n\nIn the __cdnsp_gadget_init() and cdnsp_gadget_exit() functions, the gadget\nstructure (pdev->gadget) was freed before its endpoints.\nThe endpoints are linked via the ep_list in the gadget structure.\nFreeing the gadget first leaves dangling pointers in the endpoint list.\nWhen the endpoints are subsequently freed, this results in a use-after-free.\n\nFix:\nBy separating the usb_del_gadget_udc() operation into distinct \"del\" and\n\"put\" steps, cdnsp_gadget_free_endpoints() can be executed prior to the\nfinal release of the gadget structure with usb_put_gadget().\n\nA patch similar to bb9c74a5bd14(\"usb: dwc3: gadget: Free gadget structure\n only after freeing endpoints\").","publishedAt":"2025-12-08T00:46:40.576Z","updatedAt":"2026-05-11T21:46:57.519Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"0cf9a50af91fbdac3849f8d950e883a3eaa3ecea","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"37158ce6ba964b62d1e3eebd11f03c6900a52dd1","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"ea37884097a0931abb8e11e40eacfb25e9fdb5e9","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"9c52f01429c377a2d32cafc977465f37b5384f77","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"fdf573c517627a96f5040f988e9b21267806be5c","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"87c5ff5615dc0a37167e8faf3adeeddc6f1344a3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/cdns3/cdnsp-gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.15.197","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.117","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.58","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.8","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","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/cdnsp-gadget.c"]}],"references":["https://git.kernel.org/stable/c/0cf9a50af91fbdac3849f8d950e883a3eaa3ecea","https://git.kernel.org/stable/c/37158ce6ba964b62d1e3eebd11f03c6900a52dd1","https://git.kernel.org/stable/c/ea37884097a0931abb8e11e40eacfb25e9fdb5e9","https://git.kernel.org/stable/c/9c52f01429c377a2d32cafc977465f37b5384f77","https://git.kernel.org/stable/c/fdf573c517627a96f5040f988e9b21267806be5c","https://git.kernel.org/stable/c/87c5ff5615dc0a37167e8faf3adeeddc6f1344a3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40314.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40314","state":"PUBLISHED","datePublished":"2025-12-08T00:46:40.576Z","dateUpdated":"2026-05-11T21:46:57.519Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.185Z"},"containers":{"cna":{"title":"usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget\n\nIn the __cdnsp_gadget_init() and cdnsp_gadget_exit() functions, the gadget\nstructure (pdev->gadget) was freed before its endpoints.\nThe endpoints are linked via the ep_list in the gadget structure.\nFreeing the gadget first leaves dangling pointers in the endpoint list.\nWhen the endpoints are subsequently freed, this results in a use-after-free.\n\nFix:\nBy separating the usb_del_gadget_udc() operation into distinct \"del\" and\n\"put\" steps, cdnsp_gadget_free_endpoints() can be executed prior to the\nfinal release of the gadget structure with usb_put_gadget().\n\nA patch similar to bb9c74a5bd14(\"usb: dwc3: gadget: Free gadget structure\n only after freeing endpoints\")."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"0cf9a50af91fbdac3849f8d950e883a3eaa3ecea","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"37158ce6ba964b62d1e3eebd11f03c6900a52dd1","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"ea37884097a0931abb8e11e40eacfb25e9fdb5e9","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"9c52f01429c377a2d32cafc977465f37b5384f77","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"fdf573c517627a96f5040f988e9b21267806be5c","versionType":"git"},{"version":"8bc1901ca7b07d864fca11461b3875b31f949765","status":"affected","lessThan":"87c5ff5615dc0a37167e8faf3adeeddc6f1344a3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/cdns3/cdnsp-gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.15.197","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.117","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.58","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.8","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","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/cdnsp-gadget.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0cf9a50af91fbdac3849f8d950e883a3eaa3ecea"},{"url":"https://git.kernel.org/stable/c/37158ce6ba964b62d1e3eebd11f03c6900a52dd1"},{"url":"https://git.kernel.org/stable/c/ea37884097a0931abb8e11e40eacfb25e9fdb5e9"},{"url":"https://git.kernel.org/stable/c/9c52f01429c377a2d32cafc977465f37b5384f77"},{"url":"https://git.kernel.org/stable/c/fdf573c517627a96f5040f988e9b21267806be5c"},{"url":"https://git.kernel.org/stable/c/87c5ff5615dc0a37167e8faf3adeeddc6f1344a3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:46:57.519Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.197"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.6.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.12.58"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.17.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}