Buffer Overflow in strlen - ocfs2
Summary
GSD-2021-1001981: ocfs2: mount fails with buffer overflow in strlen. Affects Kernel versions < 7623b1035ca2d17bde0f6a086ad6844a34648df1. No fix is published. How to fix ↓
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Background
ocfs2 is a file system implemented in the Linux Kernel. It is designed to provide shared storage access to multiple nodes in a cluster. The ocfs2 file system allows for concurrent access to files and directories, making it suitable for use in high-performance computing environments. However, a vulnerability has been discovered in ocfs2 that can lead to a buffer overflow in the strlen function.
Vulnerability Detail
The vulnerability in ocfs2 occurs when mounting the file system. Due to a buffer overflow in the strlen function, an attacker could potentially overwrite adjacent memory and execute arbitrary code. This could lead to a privilege escalation or a denial of service attack. The vulnerability has been fixed in Linux Kernel version v4.19.214 by commit 7623b1035ca2d17bde0f6a086ad6844a34648df1.
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 necessary to update the Linux Kernel to a fixed version.
Conclusion
The buffer overflow vulnerability in ocfs2 can be mitigated by updating the Linux Kernel to version v4.19.214 or later. It is important to promptly apply the fix to ensure the security and stability of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
ocfs2 is a file system implemented in the Linux Kernel that provides shared storage access to multiple nodes in a cluster.
The vulnerability can lead to a buffer overflow, allowing an attacker to execute arbitrary code or cause a denial of service.
To fix the vulnerability, update the Linux Kernel to version v4.19.214 or later.
No, there is no known workaround. Updating the Linux Kernel is necessary.
For more details, refer to the vulnerability report at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001981.json
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