{"id":"CVE-2026-64337","state":"PUBLISHED","title":"usb: mtu3: unmap request DMA on queue failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: mtu3: unmap request DMA on queue failure\n\nmtu3_gadget_queue() maps the request before checking whether\nthe QMU GPD ring can accept another transfer. the request is\nreturned with -EAGAIN before it is linked on the endpoint\nrequest list if mtu3_prepare_transfer() fails.\n\nNormal completion and dequeue paths unmap requests from\nmtu3_req_complete(), but this error path never reaches that\nhelper, so the DMA mapping is left active. Unmap the request\nbefore returning from the failed queue path.","publishedAt":"2026-07-25T08:50:02.066Z","updatedAt":"2026-08-17T04:53:40.517Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"3cee30f1138281a1d247bb053a1ad4f7c5b04e98","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"f3c4026524d3660c73ef2838b99776d37631e039","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"e8f739a3860d043dcc135371637e82f53132efe5","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"4183874b7925f4a98b400cf857bea26ee87da236","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"00c3fef4c2dc2c7cbd8281f8fda09d1913420f09","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"835b0596d4c9bdef93f842d8f826978fb4956b74","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"0bddda5a11665c210339de76d27ebbd1a2e0b43c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/mtu3/mtu3_gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.96","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.39","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.4","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/mtu3/mtu3_gadget.c"]}],"references":["https://git.kernel.org/stable/c/3cee30f1138281a1d247bb053a1ad4f7c5b04e98","https://git.kernel.org/stable/c/f3c4026524d3660c73ef2838b99776d37631e039","https://git.kernel.org/stable/c/e8f739a3860d043dcc135371637e82f53132efe5","https://git.kernel.org/stable/c/4183874b7925f4a98b400cf857bea26ee87da236","https://git.kernel.org/stable/c/00c3fef4c2dc2c7cbd8281f8fda09d1913420f09","https://git.kernel.org/stable/c/8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1","https://git.kernel.org/stable/c/835b0596d4c9bdef93f842d8f826978fb4956b74","https://git.kernel.org/stable/c/0bddda5a11665c210339de76d27ebbd1a2e0b43c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64337.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64337","state":"PUBLISHED","datePublished":"2026-07-25T08:50:02.066Z","dateUpdated":"2026-08-17T04:53:40.517Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T15:36:31.781Z"},"containers":{"cna":{"title":"usb: mtu3: unmap request DMA on queue failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: mtu3: unmap request DMA on queue failure\n\nmtu3_gadget_queue() maps the request before checking whether\nthe QMU GPD ring can accept another transfer. the request is\nreturned with -EAGAIN before it is linked on the endpoint\nrequest list if mtu3_prepare_transfer() fails.\n\nNormal completion and dequeue paths unmap requests from\nmtu3_req_complete(), but this error path never reaches that\nhelper, so the DMA mapping is left active. Unmap the request\nbefore returning from the failed queue path."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"3cee30f1138281a1d247bb053a1ad4f7c5b04e98","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"f3c4026524d3660c73ef2838b99776d37631e039","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"e8f739a3860d043dcc135371637e82f53132efe5","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"4183874b7925f4a98b400cf857bea26ee87da236","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"00c3fef4c2dc2c7cbd8281f8fda09d1913420f09","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"835b0596d4c9bdef93f842d8f826978fb4956b74","versionType":"git"},{"version":"df2069acb00569a6299d6e11aa1865eeba463848","status":"affected","lessThan":"0bddda5a11665c210339de76d27ebbd1a2e0b43c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/mtu3/mtu3_gadget.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.96","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.39","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.4","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/mtu3/mtu3_gadget.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3cee30f1138281a1d247bb053a1ad4f7c5b04e98"},{"url":"https://git.kernel.org/stable/c/f3c4026524d3660c73ef2838b99776d37631e039"},{"url":"https://git.kernel.org/stable/c/e8f739a3860d043dcc135371637e82f53132efe5"},{"url":"https://git.kernel.org/stable/c/4183874b7925f4a98b400cf857bea26ee87da236"},{"url":"https://git.kernel.org/stable/c/00c3fef4c2dc2c7cbd8281f8fda09d1913420f09"},{"url":"https://git.kernel.org/stable/c/8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1"},{"url":"https://git.kernel.org/stable/c/835b0596d4c9bdef93f842d8f826978fb4956b74"},{"url":"https://git.kernel.org/stable/c/0bddda5a11665c210339de76d27ebbd1a2e0b43c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T04:53:40.517Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.12.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}