CVE-2026-64337
CVE-2026-64337: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.
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Red Hat
1 advisory- Advisory severityUnrated
Advisory [CVE-2026-64337] unmap request DMA on queue failure
CVE-2026-64337Source published Source updated
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. When the `mtu3_gadget_queue()` function encounters a failure during the preparation of a USB transfer, the associated Direct Memory Access (DMA) mapping is not properly released. This leaves the DMA mapping active, which can lead to a resource leak. Repeated exploitation of this flaw could allow a…
- Affected products in this advisory
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- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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