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zdiHexRabbit (@h3xr4bb1t)ZDI-24-777
HistoryJun 14, 2024 - 12:00 a.m.

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

2024-06-1400:00:00
HexRabbit (@h3xr4bb1t)
www.zerodayinitiative.com
remote attack disclosure
linux kernel vulnerability
authentication bypass
smb2 requests
user-supplied data validation
arbitrary code execution

6.7 Medium

AI Score

Confidence

High

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication may or may not be required to exploit this vulnerability, depending upon configuration. Furthermore, only systems with ksmbd enabled are vulnerable. The specific flaw exists within the parsing of SMB2 requests. 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.

6.7 Medium

AI Score

Confidence

High