CVE-2026-90369

Unknown

Description

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.

SeverityUnknown

CVSS—

Exploit probability—

Product

Linux

PublishedSep 17, 2026

First seenSep 17, 2026

How to fix

Update

Linux Linux6ed0fba58bb125a8d8de96e391aa86111166efca, 6689b4a65e88d7b019e687fa9d6943ca070f3e43 or later

Affected products

Product	Affected versions	Fixed in
Linux Linux	2df00805f7dbaa46b60c682aad0d76270b7ba266 ≤ v < 6ed0fba58bb125a8d8de96e391aa86111166efca, 2df00805f7dbaa46b60c682aad0d76270b7ba266 ≤ v < 6689b4a65e88d7b019e687fa9d6943ca070f3e43, 6.19	6ed0fba58bb125a8d8de96e391aa86111166efca, 6689b4a65e88d7b019e687fa9d6943ca070f3e43

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