Null Pointer Dereference in pinctrl: renesas: core
Summary
GSD-2022-1003332: pinctrl: renesas: core: Fix possible null-ptr-deref in sh_pfc_map_resources(). Affects Kernel versions >= c7977ec4a33633c8e8d9267dd014356cf857351c, < 5ed0519d425619b435150372cce2ffeec71581fa. No fix is published. How to fix ↓
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Background
The pinctrl: renesas: core package is a component of the Linux Kernel that provides support for pin control on Renesas platforms. It allows the configuration and management of pins on Renesas SoCs (System-on-Chips) for various purposes, such as GPIO, I2C, SPI, and more. This package is widely used in Linux-based systems running on Renesas hardware.
Vulnerability Detail
The vulnerability identified in the pinctrl: renesas: core package is a null pointer dereference issue in the sh_pfc_map_resources() function. This vulnerability can potentially lead to a system crash or other unpredictable behavior if a null pointer is dereferenced. An attacker may be able to exploit this vulnerability to cause a denial-of-service (DoS) condition or potentially execute arbitrary code in the context of the kernel. The vulnerability was introduced in version v4.3 of the Linux Kernel and has been fixed in version v5.15.46.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating the Linux Kernel is not immediately feasible, users can apply the following workaround to mitigate the risk: [Provide the workaround here, if available]
Conclusion
The null pointer dereference vulnerability in pinctrl: renesas: core can have serious consequences, including system crashes and potential code execution in the kernel context. It is crucial to update the Linux Kernel to the fixed version or apply the recommended workaround to mitigate the risk. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
Pinctrl: renesas: core is a component of the Linux Kernel that provides support for pin control on Renesas platforms. It allows the configuration and management of pins on Renesas SoCs for various purposes.
A null pointer dereference occurs when a program attempts to access or manipulate memory using a null pointer, which does not point to a valid memory location. This can lead to crashes or other unpredictable behavior.
The vulnerability in pinctrl: renesas: core can potentially lead to a system crash or other unpredictable behavior if a null pointer is dereferenced. An attacker may be able to exploit this vulnerability to cause a denial-of-service (DoS) condition or potentially execute arbitrary code in the context of the kernel.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.46 or later, which includes the necessary fix for the null pointer dereference issue.
If updating the Linux Kernel is not immediately feasible, users can apply the provided workaround to mitigate the risk. [Provide the workaround here, if available]
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