Double Free Race Vulnerability in cifs Package
Summary
GSD-2022-1000944: cifs: fix double free race when mount fails in cifs_get_root(). Affects Kernel versions < da834d6c1147c7519a9e55b510a03b7055104749. 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 is a network file-sharing protocol used primarily by Windows-based systems. The cifs package allows Linux systems to mount and access remote file shares using the CIFS protocol. It provides functionality for authentication, file access, and other operations related to CIFS. However, a vulnerability has been discovered in the cifs package that could lead to a double free race condition when a mount operation fails in the cifs_get_root() function.
Vulnerability Detail
The double free race vulnerability in the cifs package occurs when a mount operation fails in the cifs_get_root() function. This vulnerability can be exploited by an attacker to cause a double free condition, which may lead to memory corruption or other undefined behavior. The impact of this vulnerability depends on the specific context in which it is exploited and the actions performed by the attacker. It is important to note that the actual impact and attack plausibility of this vulnerability have not yet been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to update the Linux Kernel to the fixed version.
Conclusion
The double free race vulnerability in the cifs package can be addressed by updating the Linux Kernel to version v4.9.305 or later. This update includes the necessary fix to prevent the double free condition from occurring. For further support and assistance in 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 mount and access remote file shares.
A double free race vulnerability occurs when a program attempts to free a memory block that has already been freed. In the case of this vulnerability in the cifs package, it can be triggered when a mount operation fails in the cifs_get_root() function.
The potential consequences of this vulnerability include memory corruption, undefined behavior, and possible exploitation by attackers. However, the actual impact and attack plausibility have not yet been proven.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.9.305 or later, which includes the necessary fix for the double free race vulnerability in the cifs package.
No specific workaround is mentioned for this vulnerability. The recommended approach is to update the Linux Kernel to the fixed version.
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