CVE-2026-90369
wifi: mt76: fix out-of-bounds access in mmio copy helpers
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: fix out-of-bounds access in mmio copy helpers mt76_mmio_write_copy() and mt76_mmio_read_copy() iterate up to ALIGN(len, 4), so a length that is not a multiple of four reads past the source buffer (write_copy) or writes past the destination (read_copy). Copy the aligned body in the loop and handle the remaining tail through a 4-byte bounce buffer, keeping the register access width unchanged.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
2df00805f7dbaa46b60c682aad0d76270b7ba266 < 6ed0fba58bb125a8d8de96e391aa86111166efca 2df00805f7dbaa46b60c682aad0d76270b7ba266 < 6689b4a65e88d7b019e687fa9d6943ca070f3e43
Linux / Linux
6.19