CVE-2026-63929
kernel: iio: buffer: Fix DMA fence leak in iio_buffer_enqueue_dmabuf()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 19, 2026
Updated · October 31, 2026
Description
A flaw was found in the Linux kernel's Industrial I/O (iio) buffer component. The iio_buffer_enqueue_dmabuf() function, responsible for managing Direct Memory Access (DMA) buffers, fails to properly release a memory reference. This oversight results in a continuous memory leak, where small blocks of memory are permanently allocated but never freed. Over time, this can lead to memory exhaustion and a Denial of Service (DoS) condition, making the system unstable or unresponsive.
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime