usbnet: Sanity Check for maxpacket
Summary
GSD-2021-1001923: usbnet: sanity check for maxpacket. Affects Kernel versions < b9eba0a4a527e04d712f0e0401e5391ef124b33e. No fix is published. How to fix ↓
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Background
The usbnet package is a part of the Linux Kernel ecosystem and is responsible for providing USB networking capabilities. It allows devices to communicate over USB as if they were connected through a network. The package handles various aspects of USB networking, including packet transmission and reception. However, a vulnerability has been discovered in the package related to the sanity check for maxpacket.
Vulnerability Detail
The vulnerability in usbnet arises from a missing sanity check for the maxpacket value. The maxpacket value represents the maximum packet size that can be transmitted or received by the USB device. Without proper validation, an attacker could manipulate this value to cause a buffer overflow or other memory-related issues. Exploiting this vulnerability could lead to arbitrary code execution, denial of service, or privilege escalation. It is important to note that the impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
The vulnerability has been fixed in the Linux Kernel version v4.4.291 through commit b9eba0a4a527e04d712f0e0401e5391ef124b33e. To fix the vulnerability, users should update their Linux Kernel to version v4.4.291 or later. It is recommended to regularly update the Kernel to ensure the latest security patches are applied.
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Workaround
As this vulnerability has been fixed in the Linux Kernel, there is no specific workaround available. Users are advised to update their Kernel to the patched version.
Conclusion
The usbnet package in the Linux Kernel is vulnerable to a missing sanity check for the maxpacket value. This vulnerability could potentially lead to serious security issues. It is crucial to update the Linux Kernel to version v4.4.291 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
usbnet is a package in the Linux Kernel ecosystem that enables USB networking capabilities, allowing devices to communicate over USB as if they were connected through a network.
The maxpacket value represents the maximum packet size that can be transmitted or received by a USB device. It is used to ensure proper handling of USB data transfers.
Exploiting this vulnerability could lead to arbitrary code execution, denial of service, or privilege escalation. However, the actual impact and attack plausibility have not been proven yet.
To fix this vulnerability, users should update their Linux Kernel to version v4.4.291 or later, which includes the necessary patch.
No, as the vulnerability has been fixed in the Linux Kernel, there is no specific workaround available. Updating the Kernel to the patched version is recommended.
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