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zdiHexRabbit (@h3xr4bb1t) and Pumpkin (@u1f383)ZDI-23-981
HistoryJul 20, 2023 - 12:00 a.m.

Linux Kernel ksmbd Session Setup Out-Of-Bounds Read Information Disclosure Vulnerability

2023-07-2000:00:00
HexRabbit (@h3xr4bb1t) and Pumpkin (@u1f383)
www.zerodayinitiative.com
15
remote exploitation
information disclosure
ksmbd enabled
session setup
user-supplied data
kernel context .

0 Low

EPSS

Percentile

0.0%

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable. The specific flaw exists within the handling of session setup 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 in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.

0 Low

EPSS

Percentile

0.0%