CVE-2026-64337usb: mtu3: unmap request DMA on queue failure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from df2069acb00569a6299d6e11aa1865eeba463848 before 3cee30f1138281a1d247bb053a1ad4f7c5b04e98; from df2069acb00569a6299d6e11aa1865eeba463848 before f3c4026524d3660c73ef2838b99776d37631e039; from df2069acb00569a6299d6e11aa1865eeba463848 before e8f739a3860d043dcc135371637e82f53132efe5; from df2069acb00569a6299d6e11aa1865eeba463848 before 4183874b7925f4a98b400cf857bea26ee87da236; from df2069acb00569a6299d6e11aa1865eeba463848 before 00c3fef4c2dc2c7cbd8281f8fda09d1913420f09; from df2069acb00569a6299d6e11aa1865eeba463848 before 8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1; from df2069acb00569a6299d6e11aa1865eeba463848 before 835b0596d4c9bdef93f842d8f826978fb4956b74; from df2069acb00569a6299d6e11aa1865eeba463848 before 0bddda5a11665c210339de76d27ebbd1a2e0b43c | CNA record |
linux linux_kernel linux:linux_kernel | from 4.10 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39; from 6.19 before 7.1.4; 7.2; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/3cee30f1138281a1d247bb053a1ad4f7c5b04e98patch
- https://git.kernel.org/stable/c/f3c4026524d3660c73ef2838b99776d37631e039patch
- https://git.kernel.org/stable/c/e8f739a3860d043dcc135371637e82f53132efe5patch
- https://git.kernel.org/stable/c/4183874b7925f4a98b400cf857bea26ee87da236patch
- https://git.kernel.org/stable/c/00c3fef4c2dc2c7cbd8281f8fda09d1913420f09patch
- https://git.kernel.org/stable/c/8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1patch
- https://git.kernel.org/stable/c/835b0596d4c9bdef93f842d8f826978fb4956b74patch
- https://git.kernel.org/stable/c/0bddda5a11665c210339de76d27ebbd1a2e0b43cpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.