CVE-2026-80568
Description
A flaw was found in the Linux kernel's synaptics-rmi4 input driver. Changing the diagnostic report type while a video stream (V4L2) is active can alter the expected report size. Since V4L2 buffers are allocated based on the initial size at stream start, a larger subsequent report could lead to a heap buffer overflow. This vulnerability could allow a local attacker to potentially cause a denial of service or achieve arbitrary code execution.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Integrity,Availability,Confidentiality
Technical Impact: DoS: Crash, Exit, or Restart; Execute Unauthorized Code or Commands; Read Memory; Modify Memory
If the incorrect calculation is used in the context of memory allocation, then the software may create a buffer that is smaller or larger than expected. If the allocated buffer is smaller than expected, this could lead to an out-of-bounds read or write (CWE-119), possibly causing a crash, allowing arbitrary code execution, or exposing sensitive data.
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