High severity7.8NVD Advisory· Published Aug 26, 2026· Updated Aug 27, 2026
CVE-2026-80568
CVE-2026-80568
Description
In the Linux kernel, the following vulnerability has been resolved:
Input: synaptics-rmi4 - block s_input when F54 queue is busy
Changing the input (diagnostic report type) mid-stream changes the report size. Since V4L2 buffers are allocated based on the size at stream start, changing the input while streaming could lead to a heap buffer overflow if the new size is larger than the allocated buffers.
Prevent this by blocking VIDIOC_S_INPUT with -EBUSY if the V4L2 queue is busy (streaming).
Affected products
3Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/1d718f1461766e9f00a8dbeb4f13f1b1c19d90acnvd
- git.kernel.org/stable/c/493ba8e794729649689438edba72337111303cc4nvd
- git.kernel.org/stable/c/7e994a9ecc0b49ad2fe63da9c92a8aca8a6614afnvd
- git.kernel.org/stable/c/cae79513f9115c350561b16f36adcb47c9bfff12nvd
- git.kernel.org/stable/c/ddd9a53faf3b65e5920cb802cb1db6f4615bdfefnvd
- git.kernel.org/stable/c/fa69f93015becf3729716de2199b58540aa99672nvd
- git.kernel.org/stable/c/fbfd76746adc16d64be29ff113f673b70bc3f5c2nvd
- git.kernel.org/stable/c/ff0849705d29277fd1f6fc6596674b9308724fb2nvd
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