CVE-2026-72481

Summary

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

iio: magnetometer: ak8975: fix potential kernel stack memory leak

Currently in the AK8975 driver there are four instances where potential uninitialized kernel stack memory leaks can occur. If i2c_smbus_read_i2c_block_data_or_emulated() returns a value less than the size of the buffer, uninitialized bytes are retained in the buffer and later the buffer is passed on to IIO buffers, potentially leaking memory to userspace.

Fix this by adding checks whether the return value of the function is equal to the size of the buffer and subsequently if the value is lesser than zero to distinguish from a returned error code.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < 12848f4ded022963944c063e09a192549a4dad1eaffected
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < a9cf46054f81972f8c0f1dc2a79d2a141999dbceaffected
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < 9f920550abacedc7fc3163dea65ac2a7d0b0765daffected
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < 8cf346074533356d67a6a6a43a192328ad341f11affected
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < b974566803bceb72f0b9b5f1d7270b79ba963766affected
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < 3d57672119525c59ed73ea21accb001ccbcd6cfdaffected
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < fb27ebf81136e796c7b719303ef6fd7e1ae5d488affected
LinuxLinuxbc11ca4a0b84a2f2ebaca2614b92998738d13b1e < a9a00d727b7bbc5e913a919530a9dd468935bf95affected
LinuxLinux4.7affected
LinuxLinux0 < 4.7unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References