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.

A flaw was found in the Linux kernel's Industrial I/O (IIO) subsystem, specifically within the hardware consumer buffer (hw-consumer). Due to an oversight in memory management, a dedicated memory region (scan_mask) was not properly released when its associated buffer was freed. A local attacker with low privileges could exploit this memory leak, potentially leading to system instability or a denial of service (DoS) by exhausting available memory resources.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-64498 https://nvd.nist.gov/vuln/detail/CVE-2026-64498 https://lore.kernel.org/linux-cve-announce/2026072552-CVE-2026-64498-aa0a@gregkh/T