CVE-2026-64337

usb: mtu3: unmap request DMA on queue failure

State: Published
Severity: Not scored
Published: Jul 25, 2026
Updated: Aug 17, 2026
Reserved: Jul 19, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	df2069acb00569a6299d6e11aa1865eeba463848 to before 3cee30f1138281a1d247bb053a1ad4f7c5b04e98Affected df2069acb00569a6299d6e11aa1865eeba463848 to before f3c4026524d3660c73ef2838b99776d37631e039Affected df2069acb00569a6299d6e11aa1865eeba463848 to before e8f739a3860d043dcc135371637e82f53132efe5Affected df2069acb00569a6299d6e11aa1865eeba463848 to before 4183874b7925f4a98b400cf857bea26ee87da236Affected df2069acb00569a6299d6e11aa1865eeba463848 to before 00c3fef4c2dc2c7cbd8281f8fda09d1913420f09Affected df2069acb00569a6299d6e11aa1865eeba463848 to before 8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1Affected df2069acb00569a6299d6e11aa1865eeba463848 to before 835b0596d4c9bdef93f842d8f826978fb4956b74Affected df2069acb00569a6299d6e11aa1865eeba463848 to before 0bddda5a11665c210339de76d27ebbd1a2e0b43cAffected
LinuxLinux	4.10Affected before 4.10Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.96 through 6.12.Not affected 6.18.39 through 6.18.Not affected 7.1.4 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

df2069acb00569a6299d6e11aa1865eeba463848 to before 3cee30f1138281a1d247bb053a1ad4f7c5b04e98Affected
df2069acb00569a6299d6e11aa1865eeba463848 to before f3c4026524d3660c73ef2838b99776d37631e039Affected
df2069acb00569a6299d6e11aa1865eeba463848 to before e8f739a3860d043dcc135371637e82f53132efe5Affected
df2069acb00569a6299d6e11aa1865eeba463848 to before 4183874b7925f4a98b400cf857bea26ee87da236Affected
df2069acb00569a6299d6e11aa1865eeba463848 to before 00c3fef4c2dc2c7cbd8281f8fda09d1913420f09Affected
df2069acb00569a6299d6e11aa1865eeba463848 to before 8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1Affected
df2069acb00569a6299d6e11aa1865eeba463848 to before 835b0596d4c9bdef93f842d8f826978fb4956b74Affected
df2069acb00569a6299d6e11aa1865eeba463848 to before 0bddda5a11665c210339de76d27ebbd1a2e0b43cAffected

LinuxLinux

4.10Affected
before 4.10Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.96 through 6.12.*Not affected
6.18.39 through 6.18.*Not affected
7.1.4 through 7.1.*Not affected
7.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.