CVE-2026-72481

A flaw was found in the Linux kernel's iio: magnetometer: ak8975 driver. This vulnerability occurs when the i2c_smbus_read_i2c_block_data_or_emulated() function returns fewer bytes than expected, leaving uninitialized data in a buffer. A local attacker with access to IIO (Industrial Input/Output) buffers could potentially exploit this to read sensitive information from the kernel stack memory, leading to information disclosure.

A moderate-impact flaw was found in the Linux kernel's AK8975 magnetometer driver (iio/magnetometer/ak8975). The driver does not check that i2c_smbus_read_i2c_block_data_or_emulated() returned as many bytes as the size of the requested buffer; when a short read occurs, uninitialized bytes remain in the buffer and are later passed to IIO (Industrial Input/Output) buffers, which are exposed to userspace. A local attacker with access to IIO buffers on a system using this driver could exploit this flaw to disclose sensitive information from kernel stack memory. All currently listed Red Hat offerings, including Red Hat Enterprise Linux 6 through 10 (kernel and kernel-rt) and Red Hat In-Vehicle OS, are marked not affected because the vulnerable code is not present in the shipped kernels.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.