{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40092","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.163Z","datePublished":"2025-10-30T09:47:59.910Z","dateUpdated":"2026-05-11T21:42:21.524Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:42:21.524Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_ncm: Refactor bind path to use __free()\n\nAfter an bind/unbind cycle, the ncm->notify_req is left stale. If a\nsubsequent bind fails, the unified error label attempts to free this\nstale request, leading to a NULL pointer dereference when accessing\nep->ops->free_request.\n\nRefactor the error handling in the bind path to use the __free()\nautomatic cleanup mechanism.\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000020\nCall trace:\n usb_ep_free_request+0x2c/0xec\n ncm_bind+0x39c/0x3dc\n usb_add_function+0xcc/0x1f0\n configfs_composite_bind+0x468/0x588\n gadget_bind_driver+0x104/0x270\n really_probe+0x190/0x374\n __driver_probe_device+0xa0/0x12c\n driver_probe_device+0x3c/0x218\n __device_attach_driver+0x14c/0x188\n bus_for_each_drv+0x10c/0x168\n __device_attach+0xfc/0x198\n device_initial_probe+0x14/0x24\n bus_probe_device+0x94/0x11c\n device_add+0x268/0x48c\n usb_add_gadget+0x198/0x28c\n dwc3_gadget_init+0x700/0x858\n __dwc3_set_mode+0x3cc/0x664\n process_scheduled_works+0x1d8/0x488\n worker_thread+0x244/0x334\n kthread+0x114/0x1bc\n ret_from_fork+0x10/0x20"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_ncm.c"],"versions":[{"version":"9f6ce4240a2bf456402c15c06768059e5973f28c","lessThan":"185193a4714aa9c78437a7a1858fbe5771f0f45c","status":"affected","versionType":"git"},{"version":"9f6ce4240a2bf456402c15c06768059e5973f28c","lessThan":"f37de8dec6a4c379b4b8486003a1de00ff8cff3b","status":"affected","versionType":"git"},{"version":"9f6ce4240a2bf456402c15c06768059e5973f28c","lessThan":"1cde4516295a030cb8ab4c93114ca3b6c3c6a1e2","status":"affected","versionType":"git"},{"version":"9f6ce4240a2bf456402c15c06768059e5973f28c","lessThan":"d3fe7143928d8dfa2ec7bac9f906b48bc75b98ee","status":"affected","versionType":"git"},{"version":"9f6ce4240a2bf456402c15c06768059e5973f28c","lessThan":"ed78f4d6079d872432b1ed54f155ef61965d3137","status":"affected","versionType":"git"},{"version":"9f6ce4240a2bf456402c15c06768059e5973f28c","lessThan":"75a5b8d4ddd4eb6b16cb0b475d14ff4ae64295ef","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/gadget/function/f_ncm.c"],"versions":[{"version":"2.6.38","status":"affected"},{"version":"0","lessThan":"2.6.38","status":"unaffected","versionType":"semver"},{"version":"5.15.196","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.158","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.114","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.55","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.5","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"5.15.196"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.1.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.6.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.12.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.17.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.38","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/185193a4714aa9c78437a7a1858fbe5771f0f45c"},{"url":"https://git.kernel.org/stable/c/f37de8dec6a4c379b4b8486003a1de00ff8cff3b"},{"url":"https://git.kernel.org/stable/c/1cde4516295a030cb8ab4c93114ca3b6c3c6a1e2"},{"url":"https://git.kernel.org/stable/c/d3fe7143928d8dfa2ec7bac9f906b48bc75b98ee"},{"url":"https://git.kernel.org/stable/c/ed78f4d6079d872432b1ed54f155ef61965d3137"},{"url":"https://git.kernel.org/stable/c/75a5b8d4ddd4eb6b16cb0b475d14ff4ae64295ef"}],"title":"usb: gadget: f_ncm: Refactor bind path to use __free()","x_generator":{"engine":"bippy-1.2.0"}}}}