CVE-2026-63966

Summary

In the Linux kernel, the following vulnerability has been resolved:

iio: imu: adis16550: fix stack leak in trigger handler

adis16550_trigger_handler() declares the scan data array on the stack without initializing it. The memcpy() at the bottom fills only the first 28 bytes (TEMP + 6 channels of GYRO/ACCEL data), and iio_push_to_buffers_with_timestamp() writes the s64 timestamp at the 8-byte-aligned offset 32. Bytes 28-31 remain uninitialized stack data which leaks to userspace on ever trigger.

Fix this all by just zero-initializing the structure on the stack.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe4570f4bb231f01e32d44fd38841665f340d6914 < ce582b22dd2ff15ac99101c22ec1559d1febe2ffaffected
LinuxLinuxe4570f4bb231f01e32d44fd38841665f340d6914 < c2c255444392872cbbf46d640cb3a938e8000309affected
LinuxLinuxe4570f4bb231f01e32d44fd38841665f340d6914 < 474f8928d50b09f7dcf507049f08732640b88b49affected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux6.18.35 <= 6.18.*unaffected
LinuxLinux7.0.12 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References