Vulnerability in Kernel: fs-writeback: writeback_sb_inodes
Summary
GSD-2022-1004048: fs-writeback: writeback_sb_inodes：Recalculate 'wrote' according skipped pages. Affects Kernel versions < e52a9cc836ba6868bcc491dc600c80d02d05c559. 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 is a critical component of the Linux operating system that manages system resources and provides an interface for applications to interact with the hardware. It is responsible for tasks such as process management, memory management, and device drivers. The fs-writeback module within the Kernel handles the writeback of dirty data from the file system cache to the storage device. This process ensures data consistency and durability. However, a vulnerability has been discovered in the writeback_sb_inodes function, which can lead to incorrect calculation of the 'wrote' value when certain pages are skipped during the writeback process.
Vulnerability Detail
The vulnerability in the fs-writeback module allows for the miscalculation of the 'wrote' value, which represents the number of bytes written during the writeback process. This can result in incorrect reporting of the amount of data written to the storage device, potentially leading to data corruption or loss. An attacker could potentially exploit this vulnerability to manipulate or corrupt data on the affected system. The vulnerability has been fixed in Linux Kernel version v4.9.318 by commit e52a9cc836ba6868bcc491dc600c80d02d05c559.
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 →
Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
The vulnerability in the fs-writeback module of the Kernel can result in incorrect reporting of data written to the storage device, potentially leading to data corruption or loss. It is crucial to update the Linux Kernel to version v4.9.318 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can lead to incorrect reporting of data written to the storage device, potentially resulting in data corruption or loss.
No, this vulnerability requires local access to the affected system.
There are no known instances of this vulnerability being exploited in the wild at this time.
No, a CVSS score has not been assigned to this vulnerability at this time.
For more details about this vulnerability, including its technical aspects and the fix, please refer to the provided references link.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
