CVE-2026-64337
In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: unmap request DMA on queue failure mtu3_gadget_queue() maps the request before checking whether the QMU GPD ring can accept another transfer. the request is returned with…
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: unmap request DMA on queue failure mtu3_gadget_queue() maps the request before checking whether the QMU GPD ring can accept another transfer. the request is returned with -EAGAIN before it is linked on the endpoint request list if mtu3_prepare_transfer() fails. Normal completion and dequeue paths unmap requests from mtu3_req_complete(), but this error path never reaches that helper, so the DMA mapping is left active. Unmap the request before returning from the failed queue path.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/00c3fef4c2dc2c7cbd8281f8fda09d1913420f09Patch
- https://git.kernel.org/stable/c/0bddda5a11665c210339de76d27ebbd1a2e0b43cPatch
- https://git.kernel.org/stable/c/3cee30f1138281a1d247bb053a1ad4f7c5b04e98Patch
- https://git.kernel.org/stable/c/4183874b7925f4a98b400cf857bea26ee87da236Patch
- https://git.kernel.org/stable/c/835b0596d4c9bdef93f842d8f826978fb4956b74Patch
- https://git.kernel.org/stable/c/8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1Patch
- https://git.kernel.org/stable/c/e8f739a3860d043dcc135371637e82f53132efe5Patch
- https://git.kernel.org/stable/c/f3c4026524d3660c73ef2838b99776d37631e039Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.