Linux Kernel eMPIA USB Device Driver Race Condition Code Execution Vulnerability

September 14th, 2026
ZDI-26-692 ZDI-CAN-30389

CVE ID

CVE-2026-31583

CVSS Score

7.1 AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Vendors

Linux

Affected Products

Kernel

Vulnerability Details

This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of em28xx_v4l2 structures. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

Additional Details

Linux has issued an update to correct this vulnerability. More details can be found at:
https://github.com/torvalds/linux/commit/a66485a934c7187ae8e36517d40615fa2e961cff

Disclosure Timeline

  • 2026-04-17 - Vulnerability reported to vendor
  • 2026-09-14 - Coordinated public release of advisory
  • 2026-09-14 - Advisory Updated

Credit

Lucas Leong (@_wmliang_) of TrendAI Zero Day Initiative

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