ZDI-23-980: Linux Kernel ksmbd Out-Of-Bounds Read Information Disclosure Vulnerability
First published: Thu Jul 20 2023(Updated: )
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_hdr structure. 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.
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Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is ZDI-23-980.
What is the title of this vulnerability?
The title of this vulnerability is 'Linux Kernel ksmbd Out-Of-Bounds Read Information Disclosure Vulnerability'.
What is the severity of this vulnerability?
The severity of this vulnerability is high (7.1).
What software is affected by this vulnerability?
The vulnerability affects Linux Kernel.
Are all installations of Linux Kernel affected by this vulnerability?
No, only installations with ksmbd enabled are vulnerable.
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