CVE-2026-90369

Summary

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.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/6ed0fba58bb125a8d8de96e391aa86111166efca
• https://git.kernel.org/stable/c/6689b4a65e88d7b019e687fa9d6943ca070f3e43

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