Memory Leak in Linux Kernel Affecting Encrypted Directories

CVE-2023-53276

What is CVE-2023-53276?

A memory leak has been identified in the Linux kernel affecting the handling of temporary files on encrypted directories through the ubifs filesystem. Specifically, when a tmpfile is created, memory allocated for the filename is not properly freed after being copied to the directory entry inode. This results in unreferenced memory that can lead to an increase in memory usage over time, potentially causing performance issues. The memory leak can be observed using kmemleak, prompting the need for corrective measures to manage memory effectively in tmpfile operations.

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