{"id":"CVE-2026-64337","summary":"usb: mtu3: unmap request DMA on queue failure","details":"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.","modified":"2026-07-27T04:03:21.495077597Z","published":"2026-07-25T08:50:02.066Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64337.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/00c3fef4c2dc2c7cbd8281f8fda09d1913420f09"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0bddda5a11665c210339de76d27ebbd1a2e0b43c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3cee30f1138281a1d247bb053a1ad4f7c5b04e98"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4183874b7925f4a98b400cf857bea26ee87da236"},{"type":"WEB","url":"https://git.kernel.org/stable/c/835b0596d4c9bdef93f842d8f826978fb4956b74"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e8f739a3860d043dcc135371637e82f53132efe5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f3c4026524d3660c73ef2838b99776d37631e039"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64337.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64337"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"df2069acb00569a6299d6e11aa1865eeba463848"},{"fixed":"3cee30f1138281a1d247bb053a1ad4f7c5b04e98"},{"fixed":"f3c4026524d3660c73ef2838b99776d37631e039"},{"fixed":"e8f739a3860d043dcc135371637e82f53132efe5"},{"fixed":"4183874b7925f4a98b400cf857bea26ee87da236"},{"fixed":"00c3fef4c2dc2c7cbd8281f8fda09d1913420f09"},{"fixed":"8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1"},{"fixed":"835b0596d4c9bdef93f842d8f826978fb4956b74"},{"fixed":"0bddda5a11665c210339de76d27ebbd1a2e0b43c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64337.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.96"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.39"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64337.json"}}],"schema_version":"1.7.5"}