Bug 2524490 (CVE-2026-80568) - CVE-2026-80568 kernel: Input: synaptics-rmi4 - block s_input when F54 queue is busy
Summary: CVE-2026-80568 kernel: Input: synaptics-rmi4 - block s_input when F54 queue i...
Keywords:
Status: NEW
Alias: CVE-2026-80568
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-26 15:00 UTC by OSIDB Bzimport
Modified: 2026-08-27 12:35 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-08-26 15:00:10 UTC 
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).
Comment 1 gkamathe 2026-08-27 12:30:33 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082612-CVE-2026-80568-d3e3@gregkh/T
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