Bounds Checking Vulnerability in Linux Kernel's ext4 Filesystem

CVE-2023-53285

What is CVE-2023-53285?

A significant vulnerability was identified in the Linux kernel's ext4 filesystem that potentially allows for inode table corruption. When the filesystem is mounted, the lack of proper bounds checking during operations on extended attributes may lead to unauthorized reads beyond allocated memory. This oversight occurs when a write operation is performed on the block device while it is actively being used. Implementing bounds checking in the 'get_max_inline_xattr_value_size()' function is essential to mitigate risks of memory corruption, ensuring the integrity and stability of the filesystem.

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