CVE-2023-4389

Summary

CVE-2023-4389 is a vulnerability affecting the btrfs filesystem in the Linux Kernel. The issue lies in the function btrfs_get_root_ref within fs/btrfs/disk-io.c, where a double decrement of the reference count occurs. This flaw can enable a local attacker with user privileges to cause a system crash or potentially leak sensitive internal kernel information.

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