CVE-2026-90369
wifi: mt76: fix out-of-bounds access in mmio copy helpers
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 7.2.6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 2df00805f7dbaa46b60c682aad0d76270b7ba266 · fixed in 6ed0fba58bb125a8d8de96e391aa86111166efca; From 2df00805f7dbaa46b60c682aad0d76270b7ba266 · fixed in 6689b4a65e88d7b019e687fa9d6943ca070f3e43
- Linux Linux
6.19
- KernelLinux
From 6.19.0 · fixed in 7.2.6