Memory Leak Vulnerability in jffs2_do_mount_fs
Summary
GSD-2022-1002135: jffs2: fix memory leak in jffs2_do_mount_fs. Affects Kernel versions >= e631ddba588783edd521c5a89f7b2902772fb691, < 607d3aab7349f18e0d9dba4100d09d16fe27caca. No fix is published. How to fix ↓
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Background
The jffs2_do_mount_fs function is part of the JFFS2 file system implementation in the Linux Kernel. JFFS2 (Journalling Flash File System 2) is a file system designed for use on flash memory devices. It provides efficient storage and retrieval of data on flash memory, making it suitable for embedded systems and other devices with limited storage capacity. However, a memory leak vulnerability has been discovered in the jffs2_do_mount_fs function, which could lead to memory exhaustion and potential denial-of-service attacks.
Vulnerability Detail
The memory leak vulnerability in jffs2_do_mount_fs occurs when the function fails to release allocated memory in certain error conditions. This can result in a gradual accumulation of unreleased memory, eventually leading to memory exhaustion and system instability. An attacker could potentially exploit this vulnerability to cause a denial-of-service condition by repeatedly triggering the error conditions that cause the memory leak. The vulnerability was introduced in version v2.6.15 of the Linux Kernel and has been fixed in version v5.10.110.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel to the latest version.
Conclusion
The memory leak vulnerability in jffs2_do_mount_fs can be mitigated by updating the Linux Kernel to version v5.10.110 or later. This update includes a fix for the vulnerability, preventing potential memory exhaustion and denial-of-service attacks. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
jffs2_do_mount_fs is a function in the JFFS2 file system implementation in the Linux Kernel. It is responsible for mounting JFFS2 file systems on flash memory devices.
JFFS2 (Journalling Flash File System 2) is a file system designed for use on flash memory devices. It provides efficient storage and retrieval of data on flash memory, making it suitable for embedded systems and other devices with limited storage capacity.
A memory leak is a type of software bug where allocated memory is not properly released, leading to a gradual accumulation of unreleased memory. This can result in memory exhaustion and system instability.
The memory leak vulnerability in jffs2_do_mount_fs could lead to memory exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability to cause a system to become unresponsive or crash.
Yes, this vulnerability has been fixed in version v5.10.110 of the Linux Kernel. Users are advised to update their kernel to this version or later to mitigate the risk.
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