{"id":"CVE-2025-68287","state":"PUBLISHED","title":"usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths\n\nThis patch addresses a race condition caused by unsynchronized\nexecution of multiple call paths invoking `dwc3_remove_requests()`,\nleading to premature freeing of USB requests and subsequent crashes.\n\nThree distinct execution paths interact with `dwc3_remove_requests()`:\nPath 1:\nTriggered via `dwc3_gadget_reset_interrupt()` during USB reset\nhandling. The call stack includes:\n- `dwc3_ep0_reset_state()`\n- `dwc3_ep0_stall_and_restart()`\n- `dwc3_ep0_out_start()`\n- `dwc3_remove_requests()`\n- `dwc3_gadget_del_and_unmap_request()`\n\nPath 2:\nAlso initiated from `dwc3_gadget_reset_interrupt()`, but through\n`dwc3_stop_active_transfers()`. The call stack includes:\n- `dwc3_stop_active_transfers()`\n- `dwc3_remove_requests()`\n- `dwc3_gadget_del_and_unmap_request()`\n\nPath 3:\nOccurs independently during `adb root` execution, which triggers\nUSB function unbind and bind operations. The sequence includes:\n- `gserial_disconnect()`\n- `usb_ep_disable()`\n- `dwc3_gadget_ep_disable()`\n- `dwc3_remove_requests()` with `-ESHUTDOWN` status\n\nPath 3 operates asynchronously and lacks synchronization with Paths\n1 and 2. When Path 3 completes, it disables endpoints and frees 'out'\nrequests. If Paths 1 or 2 are still processing these requests,\naccessing freed memory leads to a crash due to use-after-free conditions.\n\nTo fix this added check for request completion and skip processing\nif already completed and added the request status for ep0 while queue.","publishedAt":"2025-12-16T15:06:08.711Z","updatedAt":"2026-06-16T19:14:09.159Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"467add9db13219101f14b6cc5477998b4aaa5fe2","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"67192e8cb7f941b5bba91e4bb290683576ce1607","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"47de14d741cc4057046c9e2f33df1f7828254e6c","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"afc0e34f161ce61ad351303c46eb57bd44b8b090","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"7cfb62888eba292fa35cd9ddbd28ce595f60e139","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"fa5eaf701e576880070b60922200557ae4aa54e1","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"e4037689a366743c4233966f0e74bc455820d316","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/dwc3/ep0.c","drivers/usb/dwc3/gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"5.10.247","status":"unaffected","lessThanOrEqual":"5.10.*","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":"6.6.119","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.61","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.11","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/dwc3/ep0.c","drivers/usb/dwc3/gadget.c"]}],"references":["https://git.kernel.org/stable/c/467add9db13219101f14b6cc5477998b4aaa5fe2","https://git.kernel.org/stable/c/67192e8cb7f941b5bba91e4bb290683576ce1607","https://git.kernel.org/stable/c/47de14d741cc4057046c9e2f33df1f7828254e6c","https://git.kernel.org/stable/c/afc0e34f161ce61ad351303c46eb57bd44b8b090","https://git.kernel.org/stable/c/7cfb62888eba292fa35cd9ddbd28ce595f60e139","https://git.kernel.org/stable/c/fa5eaf701e576880070b60922200557ae4aa54e1","https://git.kernel.org/stable/c/e4037689a366743c4233966f0e74bc455820d316"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68287.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68287","state":"PUBLISHED","datePublished":"2025-12-16T15:06:08.711Z","dateUpdated":"2026-06-16T19:14:09.159Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-16T14:48:05.292Z"},"containers":{"cna":{"title":"usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths\n\nThis patch addresses a race condition caused by unsynchronized\nexecution of multiple call paths invoking `dwc3_remove_requests()`,\nleading to premature freeing of USB requests and subsequent crashes.\n\nThree distinct execution paths interact with `dwc3_remove_requests()`:\nPath 1:\nTriggered via `dwc3_gadget_reset_interrupt()` during USB reset\nhandling. The call stack includes:\n- `dwc3_ep0_reset_state()`\n- `dwc3_ep0_stall_and_restart()`\n- `dwc3_ep0_out_start()`\n- `dwc3_remove_requests()`\n- `dwc3_gadget_del_and_unmap_request()`\n\nPath 2:\nAlso initiated from `dwc3_gadget_reset_interrupt()`, but through\n`dwc3_stop_active_transfers()`. The call stack includes:\n- `dwc3_stop_active_transfers()`\n- `dwc3_remove_requests()`\n- `dwc3_gadget_del_and_unmap_request()`\n\nPath 3:\nOccurs independently during `adb root` execution, which triggers\nUSB function unbind and bind operations. The sequence includes:\n- `gserial_disconnect()`\n- `usb_ep_disable()`\n- `dwc3_gadget_ep_disable()`\n- `dwc3_remove_requests()` with `-ESHUTDOWN` status\n\nPath 3 operates asynchronously and lacks synchronization with Paths\n1 and 2. When Path 3 completes, it disables endpoints and frees 'out'\nrequests. If Paths 1 or 2 are still processing these requests,\naccessing freed memory leads to a crash due to use-after-free conditions.\n\nTo fix this added check for request completion and skip processing\nif already completed and added the request status for ep0 while queue."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"467add9db13219101f14b6cc5477998b4aaa5fe2","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"67192e8cb7f941b5bba91e4bb290683576ce1607","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"47de14d741cc4057046c9e2f33df1f7828254e6c","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"afc0e34f161ce61ad351303c46eb57bd44b8b090","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"7cfb62888eba292fa35cd9ddbd28ce595f60e139","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"fa5eaf701e576880070b60922200557ae4aa54e1","versionType":"git"},{"version":"72246da40f3719af3bfd104a2365b32537c27d83","status":"affected","lessThan":"e4037689a366743c4233966f0e74bc455820d316","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/dwc3/ep0.c","drivers/usb/dwc3/gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"5.10.247","status":"unaffected","lessThanOrEqual":"5.10.*","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":"6.6.119","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.61","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.11","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/dwc3/ep0.c","drivers/usb/dwc3/gadget.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/467add9db13219101f14b6cc5477998b4aaa5fe2"},{"url":"https://git.kernel.org/stable/c/67192e8cb7f941b5bba91e4bb290683576ce1607"},{"url":"https://git.kernel.org/stable/c/47de14d741cc4057046c9e2f33df1f7828254e6c"},{"url":"https://git.kernel.org/stable/c/afc0e34f161ce61ad351303c46eb57bd44b8b090"},{"url":"https://git.kernel.org/stable/c/7cfb62888eba292fa35cd9ddbd28ce595f60e139"},{"url":"https://git.kernel.org/stable/c/fa5eaf701e576880070b60922200557ae4aa54e1"},{"url":"https://git.kernel.org/stable/c/e4037689a366743c4233966f0e74bc455820d316"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:50:14.760Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.10.247"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.15.197"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.1.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.6.119"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.12.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.17.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-16T19:13:54.638944Z","id":"CVE-2025-68287","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-16T19:14:09.159Z"}}]}}}