Fix scheduling while atomic in scsi: qla2xxx
Summary
GSD-2022-1001768: scsi: qla2xxx: Fix scheduling while atomic. Affects Kernel versions < 826a9d4a00d1424afa961504aec6298ee92d5053. No fix is published. How to fix ↓
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Background
The scsi: qla2xxx is a driver in the Linux Kernel that provides support for QLogic Fibre Channel Host Bus Adapters (HBAs). These HBAs are used for connecting servers to storage devices in data centers. The qla2xxx driver handles the communication between the server and the storage device, ensuring reliable and efficient data transfer. However, a vulnerability has been discovered in the qla2xxx driver that could potentially lead to a scheduling issue while in an atomic context.
Vulnerability Detail
The vulnerability in the scsi: qla2xxx driver arises from improper scheduling while in an atomic context. Atomic context refers to a situation where the execution of code cannot be interrupted or preempted by other code. In this case, the qla2xxx driver is not properly handling atomic context, which could result in a race condition or deadlock. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with elevated 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.
Conclusion
The scsi: qla2xxx driver in the Linux Kernel is vulnerable to a scheduling issue while in an atomic context. This vulnerability could potentially lead to a denial-of-service (DoS) condition or arbitrary code execution. It is recommended to update the Linux Kernel to version v5.15.33 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The scsi: qla2xxx driver is a component of the Linux Kernel that provides support for QLogic Fibre Channel Host Bus Adapters (HBAs). It enables communication between servers and storage devices in data centers.
An atomic context refers to a situation where the execution of code cannot be interrupted or preempted by other code. It ensures that certain critical operations are performed without interference.
A race condition is a situation in which the behavior of a system depends on the relative timing of events. It occurs when multiple threads or processes access shared data concurrently, leading to unpredictable outcomes.
A deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release a resource. This can result in a system freeze or unresponsiveness.
The potential impacts of this vulnerability include denial-of-service (DoS) conditions and the execution of arbitrary code with elevated privileges. However, the actual impact and attack plausibility have not been proven yet.
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