Vulnerability in nvme-pci: NULL pointer dereference in nvme_alloc_admin_tags
Summary
GSD-2022-1003591: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags. Affects Kernel versions < af98940dd33c9f9e1beb4f71c0a39260100e2a65. No fix is published. How to fix ↓
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Background
The nvme-pci package is a component of the Linux Kernel ecosystem. It provides support for NVMe (Non-Volatile Memory Express) devices connected via PCI. NVMe is a protocol designed for efficient communication between host systems and solid-state drives (SSDs). The nvme_alloc_admin_tags function is responsible for allocating administrative tags for NVMe commands. These tags are used to identify and track commands sent to the NVMe device. However, a vulnerability in this function can lead to a NULL pointer dereference.
Vulnerability Detail
The vulnerability in nvme-pci arises from a NULL pointer dereference in the nvme_alloc_admin_tags function. 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 (DoS) condition 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 updating their Linux Kernel to the fixed version.
Conclusion
The vulnerability in nvme-pci that caused a NULL pointer dereference in nvme_alloc_admin_tags has been fixed in Linux Kernel version v5.10.121. Users are advised to update their Linux Kernel to this version or later to ensure the vulnerability is addressed. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
nvme-pci is a component of the Linux Kernel ecosystem that provides support for NVMe devices connected via PCI. It allows efficient communication between host systems and solid-state drives (SSDs).
A NULL pointer dereference occurs when a program attempts to access or manipulate memory using a NULL pointer, which points to no valid memory address. This can lead to crashes or potential code execution.
The impact of this vulnerability can range from a denial-of-service (DoS) condition to potential code execution with kernel privileges. However, the actual impact and attack plausibility have not been proven yet.
To fix this vulnerability, users should update their Linux Kernel to version v5.10.121 or later. Regularly updating the Linux Kernel is recommended to ensure the latest security patches are applied.
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by updating their Linux Kernel to the fixed version.
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