CVE-2026-64337

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.

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EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/00c3fef4c2dc2c7cbd8281f8fda09d1913420f09 https://git.kernel.org/stable/c/0bddda5a11665c210339de76d27ebbd1a2e0b43c https://git.kernel.org/stable/c/3cee30f1138281a1d247bb053a1ad4f7c5b04e98 https://git.kernel.org/stable/c/4183874b7925f4a98b400cf857bea26ee87da236 https://git.kernel.org/stable/c/835b0596d4c9bdef93f842d8f826978fb4956b74 https://git.kernel.org/stable/c/8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1 https://git.kernel.org/stable/c/e8f739a3860d043dcc135371637e82f53132efe5 https://git.kernel.org/stable/c/f3c4026524d3660c73ef2838b99776d37631e039

Frequently Asked Questions

What is 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 -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.

How do I check if I'm vulnerable to CVE-2026-64337? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.