Vulnerability in cifs package: Bad Output Lengths in smb2_ioctl_query_info()
Summary
GSD-2022-1001914: cifs: prevent bad output lengths in smb2_ioctl_query_info(). Affects Kernel versions < f143f8334fb9eb2f6c7c15b9da1472d9c965fd84. No fix is published. How to fix ↓
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Background
The cifs package is a component of the Linux Kernel, which is responsible for providing support for the Common Internet File System (CIFS) protocol. CIFS allows Linux systems to access files and resources on remote Windows servers. The smb2_ioctl_query_info() function in the cifs package is used to query information from the server using the SMB2 protocol. However, a vulnerability exists in this function that can result in bad output lengths being returned.
Vulnerability Detail
The vulnerability in the cifs package arises from a failure to properly validate output lengths in the smb2_ioctl_query_info() function. This can lead to a situation where the function returns incorrect or incomplete information, potentially allowing an attacker to exploit the system. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.15.33 by commit f143f8334fb9eb2f6c7c15b9da1472d9c965fd84.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.33 or later. This can be done by pulling the latest changes from the official Linux Kernel repository using the following command:
git pull https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
After updating the kernel, ensure that the cifs package is also up to date.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The cifs package in the Linux Kernel is vulnerable to bad output lengths in the smb2_ioctl_query_info() function. This vulnerability has been fixed in the Linux Kernel version v5.15.33. It is recommended to update the Linux Kernel to the latest version to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The cifs package is a component of the Linux Kernel that provides support for the Common Internet File System (CIFS) protocol, allowing Linux systems to access files and resources on remote Windows servers.
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could allow an attacker to manipulate or retrieve incorrect information from the server.
Yes, this vulnerability has been fixed in the Linux Kernel version v5.15.33 by commit f143f8334fb9eb2f6c7c15b9da1472d9c965fd84.
To update the Linux Kernel, you can pull the latest changes from the official Linux Kernel repository using the command 'git pull https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/'.
No specific workaround has been mentioned for this vulnerability.
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