ZDI-23-981: Linux Kernel ksmbd Session Setup 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 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.
| Affected Software | Affected Version | How to fix |
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Reference Links
Frequently Asked Questions
What is ZDI-23-981?
ZDI-23-981 is a vulnerability in the Linux Kernel that allows remote attackers to disclose sensitive information.
How severe is ZDI-23-981?
ZDI-23-981 has a severity rating of 7.2, which is considered high.
What software is affected by ZDI-23-981?
Systems with ksmbd enabled running Linux Kernel are affected by ZDI-23-981.
Is authentication required to exploit ZDI-23-981?
No, authentication is not required to exploit ZDI-23-981.
How can I fix ZDI-23-981?
Updating the Linux Kernel to a patched version will fix ZDI-23-981.
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