CVE-2026-64498
Description
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: hw-consumer: free scan_mask on buffer release The scan_mask lifetime changed in commit 9a2e1233d38c ("iio: buffer: hw-consumer: remove redundant scan_mask flexible array"). Before that change, the scan mask storage was embedded in struct hw_consumer_buffer, so iio_hw_buf_release() could free the whole allocation with a single kfree(hw_buf). That commit moved the scan mask to a separate bitmap_zalloc() allocation stored in buffer.scan_mask, but left iio_hw_buf_release() unchanged. Free the scan mask in iio_hw_buf_release() before freeing the buffer wrapper.
How to fix
- Linux Linuxfb8e18f8ca724bd4de4643cad5b7c7230b9a5a71, 6325d6e2204327965b849c0a16efb6ac9202e5a8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 9a2e1233d38c460ad07f36901931f3674a32d1ed ≤ v < fb8e18f8ca724bd4de4643cad5b7c7230b9a5a71, 9a2e1233d38c460ad07f36901931f3674a32d1ed ≤ v < 6325d6e2204327965b849c0a16efb6ac9202e5a8, 7.1 | fb8e18f8ca724bd4de4643cad5b7c7230b9a5a71, 6325d6e2204327965b849c0a16efb6ac9202e5a8 |
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