Use-after-free vulnerability in nvme controller reset during load in Linux Kernel
Summary
GSD-2022-1000352: nvme: fix a possible use-after-free in controller reset during load. Affects Kernel versions < 70356b756a58704e5c8818cb09da5854af87e765. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. The nvme (Non-Volatile Memory Express) driver in the Linux Kernel is responsible for handling communication with NVMe storage devices. NVMe is a protocol designed for accessing solid-state drives (SSDs) over a PCI Express (PCIe) bus.
The nvme controller reset is a procedure performed during the initialization of an NVMe device or when an error occurs. This vulnerability specifically affects the controller reset process during load.
Vulnerability Detail
The use-after-free vulnerability in the nvme controller reset during load can lead to a security issue. A use-after-free vulnerability occurs when a program continues to use a memory address after it has been freed, potentially leading to memory corruption or arbitrary code execution. In this case, the vulnerability occurs during the controller reset process, which could be triggered by an attacker or through normal device operation.
The impact of this vulnerability could vary depending on the attacker's capabilities and the system's configuration. It could potentially allow an attacker to execute arbitrary code with kernel privileges, leading to a complete compromise of the system.
The vulnerability has been fixed in Linux Kernel version v5.4.181 by commit 70356b756a58704e5c8818cb09da5854af87e765.
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 solution is to update the Linux Kernel to the fixed version.
Conclusion
The use-after-free vulnerability in the nvme controller reset during load in the Linux Kernel can potentially lead to arbitrary code execution and compromise of the system. It is crucial to update the Linux Kernel to version v5.4.181 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware.
The nvme driver is responsible for handling communication with NVMe storage devices. NVMe is a protocol designed for accessing solid-state drives (SSDs) over a PCI Express (PCIe) bus.
A use-after-free vulnerability occurs when a program continues to use a memory address after it has been freed, potentially leading to memory corruption or arbitrary code execution.
The impact of this vulnerability could vary depending on the attacker's capabilities and the system's configuration. It could potentially allow an attacker to execute arbitrary code with kernel privileges, leading to a complete compromise of the system.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.181 or later. This can be done by downloading the updated kernel source code from the official Linux Kernel repository and compiling it according to the system's instructions.
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