Memory Leak in Linux Kernel Affecting ramfs-based tmpfs

CVE-2023-53391

What is CVE-2023-53391?

A vulnerability exists in the Linux kernel related to the ramfs-based tmpfs, where improper handling of the init_fs_context method leads to a memory leak. The method allocates filesystem information without properly releasing it, resulting in potential resource exhaustion and degraded system performance. To mitigate this, the use of ramfs_kill_sb() for the kill_sb method is recommended to ensure that all allocated resources are efficiently freed.

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