CVE-2026-74681
usb: misc: usbio: check ibuf_len against rxbuf_len in bulk msg
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: usb: misc: usbio: check ibuf_len against rxbuf_len in bulk msg ibuf_len is the bulk IN (receive) buffer size, but the EMSGSIZE check in usbio_bulk_msg() compares it against txbuf_len — the bulk OUT endpoint size. Both are taken independently from different endpoints in usbio_probe(), so the check is wrong when they differ. Use rxbuf_len for the IN direction. This matches the buffer that actually holds the response data.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 22, 2026 |
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Affected Versions
Linux / Linux
121a0f839dbb397af5fabb701cea3e9983223e50 < ebfd1e82ab0a6d26efd9bdd89de899215851f5bf 121a0f839dbb397af5fabb701cea3e9983223e50 < 9ad0164f78b66b0b5eca3a5748cc94dd87e28124 121a0f839dbb397af5fabb701cea3e9983223e50 < 7e22c9f79b200672f3e477421b6c9050d8cf70a5
Linux / Linux
6.18