ipw2x00: Potential NULL dereference in libipw_xmit()
Summary
GSD-2022-1003412: ipw2x00: Fix potential NULL dereference in libipw_xmit(). Affects Kernel versions < 48d4a820fd33f012e5f63735a59d15b5a3882882. No fix is published. How to fix ↓
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Background
The ipw2x00 package is a Linux kernel module that provides support for Intel PRO/Wireless 2100, 2200, and 2915 network adapters. It allows these wireless adapters to connect to Wi-Fi networks and communicate with other devices. The libipw_xmit() function is responsible for transmitting data packets over the wireless network. However, a potential vulnerability has been identified in this function that could lead to a NULL dereference.
Vulnerability Detail
The vulnerability in the ipw2x00 package arises from a potential NULL dereference in the libipw_xmit() function. If a certain condition is met during the execution of this function, it may attempt to dereference a NULL pointer, leading to a crash or potential code execution. An attacker could potentially exploit this vulnerability by sending specially crafted packets to a vulnerable system, causing it to crash or execute arbitrary code. This could result in a denial of service or even remote code execution.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can temporarily disable the affected network adapter or disconnect it from the network to mitigate the risk of exploitation. However, this is not a permanent solution and updating the kernel is strongly advised.
Conclusion
In conclusion, the ipw2x00 package is vulnerable to a potential NULL dereference in the libipw_xmit() function. This vulnerability could lead to system crashes or even remote code execution. It is crucial to update the Linux kernel to version v5.15.46 or later to mitigate this vulnerability. Disabling or disconnecting the affected network adapter temporarily can provide some level of protection, but it is not a permanent solution. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can range from a system crash to potential remote code execution. An attacker could exploit this vulnerability to disrupt the normal functioning of the system or gain unauthorized access.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any known vulnerabilities.
At the time of this report, there are no known public exploits targeting this specific vulnerability. However, it is always recommended to apply security patches promptly to mitigate any potential risks.
While temporarily disabling or disconnecting the affected network adapter can mitigate the risk, it is not a permanent solution. Updating the kernel to the patched version is the recommended course of action.
You can find more information about the fix for this vulnerability in the Linux Kernel repository. The specific commit that addresses this issue is 48d4a820fd33f012e5f63735a59d15b5a3882882.
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