CVE-2026-72481
Description
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.
How to fix
- Linux Linux12848f4ded022963944c063e09a192549a4dad1e, a9cf46054f81972f8c0f1dc2a79d2a141999dbce, 9f920550abacedc7fc3163dea65ac2a7d0b0765d, 8cf346074533356d67a6a6a43a192328ad341f11, b974566803bceb72f0b9b5f1d7270b79ba963766, 3d57672119525c59ed73ea21accb001ccbcd6cfd, fb27ebf81136e796c7b719303ef6fd7e1ae5d488, a9a00d727b7bbc5e913a919530a9dd468935bf95 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < 12848f4ded022963944c063e09a192549a4dad1e, bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < a9cf46054f81972f8c0f1dc2a79d2a141999dbce, bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < 9f920550abacedc7fc3163dea65ac2a7d0b0765d, bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < 8cf346074533356d67a6a6a43a192328ad341f11, bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < b974566803bceb72f0b9b5f1d7270b79ba963766, bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < 3d57672119525c59ed73ea21accb001ccbcd6cfd, bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < fb27ebf81136e796c7b719303ef6fd7e1ae5d488, bc11ca4a0b84a2f2ebaca2614b92998738d13b1e ≤ v < a9a00d727b7bbc5e913a919530a9dd468935bf95, 4.7 | 12848f4ded022963944c063e09a192549a4dad1e, a9cf46054f81972f8c0f1dc2a79d2a141999dbce, 9f920550abacedc7fc3163dea65ac2a7d0b0765d, 8cf346074533356d67a6a6a43a192328ad341f11, b974566803bceb72f0b9b5f1d7270b79ba963766, 3d57672119525c59ed73ea21accb001ccbcd6cfd, fb27ebf81136e796c7b719303ef6fd7e1ae5d488, a9a00d727b7bbc5e913a919530a9dd468935bf95 |
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