Null Pointer Dereference in pinctrl: renesas: rzn1
Summary
GSD-2022-1003571: pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources(). Affects Kernel versions < b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c. No fix is published. How to fix ↓
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Background
The pinctrl: renesas: rzn1 package is a component of the Linux Kernel that provides pin control functionality for Renesas RZ/N1 SoCs. It allows users to configure and control the multiplexing of pins on these SoCs, enabling the use of various peripherals and interfaces. However, a vulnerability has been discovered in the package that could lead to a null pointer dereference.
Vulnerability Detail
The vulnerability in pinctrl: renesas: rzn1, specifically in the sh_pfc_map_resources() function, can result in a null pointer dereference. This occurs when the function fails to properly handle a null pointer, leading to a crash or potential code execution. An attacker could potentially exploit this vulnerability to cause a denial of service or execute arbitrary code with kernel privileges. The impact and attack plausibility of this vulnerability have not been proven yet.
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. However, users can mitigate the risk by applying the recommended fix and updating to the latest version of the Linux Kernel.
Conclusion
The pinctrl: renesas: rzn1 package in the Linux Kernel is vulnerable to a null pointer dereference issue. To mitigate this vulnerability, it is crucial to update to Linux Kernel version v5.10.121 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Pinctrl: renesas: rzn1 is a package in the Linux Kernel that provides pin control functionality for Renesas RZ/N1 SoCs. It allows users to configure and control the multiplexing of pins on these SoCs.
A null pointer dereference occurs when a program attempts to access or manipulate memory using a null pointer, resulting in a crash or potential code execution.
The impact of this vulnerability could range from a denial of service to potential code execution with kernel privileges, depending on how it is exploited.
To fix this vulnerability, it is recommended to update to Linux Kernel version v5.10.121 or later, which includes the necessary patch to address the null pointer dereference issue.
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by applying the recommended fix and updating to the latest version of the Linux Kernel.
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