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K
zdiQuentin Minster (@thalium_team)ZDI-23-702
HistoryMay 17, 2023 - 12:00 a.m.

Linux Kernel ksmbd Tree Connection Race Condition Remote Code Execution Vulnerability

2023-05-1700:00:00
Quentin Minster (@thalium_team)
www.zerodayinitiative.com
23
remote code execution
linux kernel
ksmbd
smb2_tree_disconnect
authentication
vulnerability
locking
kernel context

0.002 Low

EPSS

Percentile

54.2%

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. 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.