Memory Leak Vulnerability in jffs2_do_mount_fs
Summary
GSD-2022-1002512: jffs2: fix memory leak in jffs2_do_mount_fs. Affects Kernel versions >= e631ddba588783edd521c5a89f7b2902772fb691, < 2a9d8184458562e6bf2f40d0e677fc85e2dd3834. No fix is published. How to fix ↓
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Background
The jffs2_do_mount_fs function is part of the Journalling Flash File System 2 (JFFS2) in the Linux Kernel. JFFS2 is a file system specifically designed for use with flash memory devices. It provides features such as wear leveling and garbage collection to optimize the lifespan of the flash memory. The jffs2_do_mount_fs function is responsible for mounting the JFFS2 file system. However, a memory leak vulnerability has been discovered in this function.
Vulnerability Detail
The memory leak vulnerability in jffs2_do_mount_fs allows an attacker to cause a denial of service (DoS) condition by repeatedly mounting and unmounting a specially crafted JFFS2 file system. This can lead to exhaustion of system memory resources, resulting in system instability or a complete system crash. The vulnerability was introduced in version v2.6.15 of the Linux Kernel and has been fixed in version v4.9.311.
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 update the Linux Kernel to the fixed version.
Conclusion
The memory leak vulnerability in jffs2_do_mount_fs can be fixed by updating the Linux Kernel to version v4.9.311 or later. It is recommended to apply the fix as soon as possible to prevent potential denial of service (DoS) attacks. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
JFFS2 is the Journalling Flash File System 2, a file system specifically designed for use with flash memory devices. It provides features such as wear leveling and garbage collection to optimize the lifespan of the flash memory.
The memory leak vulnerability in jffs2_do_mount_fs can lead to a denial of service (DoS) condition, causing system instability or a complete system crash.
To fix the vulnerability, it is recommended to update the Linux Kernel to version v4.9.311 or later.
There is no known workaround for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability without requiring access to the code or installation.
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