Memory Access Vulnerability in Linux Kernel's ext4 File System

CVE-2023-53861

What is CVE-2023-53861?

A vulnerability exists in the Linux kernel's ext4 file system that affects the validation of group corruption checks. When the group pointer (grp) is NULL, accessing its memory can lead to a kernel crash. This vulnerability emphasizes the importance of performing a NULL check prior to executing corruption verification to maintain system stability and prevent crashes.

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