ZDI-22-1690: Linux Kernel ksmbd Use-After-Free Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable. The specific flaw exists within the processing of SMB2_TREE_DISCONNECT commands. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Kernel-devel |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-22-1690?
The severity of ZDI-22-1690 is considered high due to its potential to allow remote code execution without authentication.
How do I fix ZDI-22-1690?
To fix ZDI-22-1690, update the Linux Kernel to the latest version where the vulnerability has been patched.
Which systems are affected by ZDI-22-1690?
Only systems with ksmbd enabled are affected by ZDI-22-1690.
Can ZDI-22-1690 be exploited remotely?
Yes, ZDI-22-1690 can be exploited remotely since it does not require authentication.
What type of vulnerability is ZDI-22-1690?
ZDI-22-1690 is a remote code execution vulnerability in the Linux Kernel.
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