Vulnerability in Kernel Package: blk-iolatency
Summary
GSD-2022-1003299: blk-iolatency: Fix inflight count imbalances and IO hangs on offline. Affects Kernel versions >= 8c772a9bfc7c07c76f4a58b58910452fbb20843b, < a30acbb5dfb7bcc813ad6a18ca31011ac44e5547. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel package is a critical component of the Linux operating system, responsible for managing the system's core functionality. It provides essential services such as memory management, process scheduling, and device drivers. The blk-iolatency module within the Kernel package is specifically designed to control the I/O latency of block devices. It ensures that I/O operations do not exceed specified latency limits. However, a vulnerability has been discovered in the blk-iolatency module that can lead to imbalances in the inflight count and cause I/O hangs when a device is offline.
Vulnerability Detail
The vulnerability in the blk-iolatency module arises from a flaw introduced in version v5.0 of the Linux Kernel by commit 8c772a9bfc7c07c76f4a58b58910452fbb20843b. It allows for imbalances in the inflight count, which can result in I/O hangs when a block device is offline. An attacker could potentially exploit this vulnerability to cause denial-of-service conditions or disrupt the normal functioning of the system. The impact and attack plausibility of this vulnerability have not yet been proven. However, it is crucial to address this issue to ensure the stability and reliability of the system.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Conclusion
The vulnerability in the blk-iolatency module of the Kernel package can lead to imbalances in the inflight count and I/O hangs when a block device is offline. To mitigate this vulnerability, it is crucial to update the Linux Kernel package to version v5.15.46 or later. This will ensure that the blk-iolatency module operates correctly and eliminates the risk of potential denial-of-service conditions or system disruptions. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can lead to imbalances in the inflight count and cause I/O hangs when a block device is offline. This can result in system instability, performance degradation, and potential denial-of-service conditions.
An attacker could potentially exploit this vulnerability to cause denial-of-service conditions or disrupt the normal functioning of the system by triggering imbalances in the inflight count and causing I/O hangs when a block device is offline.
There is no evidence to suggest that this vulnerability has been actively exploited in the wild. However, it is still important to address it to mitigate potential risks.
No, only versions starting from v5.0 of the Linux Kernel are affected by this vulnerability. Updating to version v5.15.46 or later will resolve the issue.
No specific workaround has been provided for this vulnerability. It is recommended to update the Kernel package to the latest version to fix the issue.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
