Linux Kernel USB/IP VHCI Driver Race Condition Privilege Escalation Vulnerability

June 21st, 2024
ZDI-24-843 ZDI-CAN-22273

CVE ID

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 escalate privileges on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the processing of the reset event. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary 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://lore.kernel.org/lkml/DM5PR0102MB3477B499A8A3292D6BFFBE80804C2@DM5PR0102MB3477.prod.exchangelabs.com/T/

Disclosure Timeline

  • 2023-10-03 - Vulnerability reported to vendor
  • 2024-06-21 - Coordinated public release of advisory
  • 2024-08-15 - Advisory Updated

Credit

Lucas Leong (@_wmliang_) of Trend Micro Zero Day Initiative

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