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zdiArnaud Gatignol, Quentin Minster, Florent Saudel, Guillaume Teissier (@thalium_team)ZDI-22-1689
HistoryDec 22, 2022 - 12:00 a.m.

Linux Kernel ksmbd Out-Of-Bounds Read Denial-of-Service Vulnerability

2022-12-2200:00:00
Arnaud Gatignol, Quentin Minster, Florent Saudel, Guillaume Teissier (@thalium_team)
www.zerodayinitiative.com
34
linux kernel
ksmbd
out-of-bounds
denial-of-service
vulnerability
smb2_tree_connect
authentication

0.002 Low

EPSS

Percentile

59.8%

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Linux Kernel. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of SMB2_TREE_CONNECT commands. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

0.002 Low

EPSS

Percentile

59.8%