Invalid Pointer Dereference in __del_reloc_root() in Btrfs Filesystem

CVE-2018-14609 · HIGH Severity

AV:N/AC:M/AU:N/C:N/I:N/A:C

An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc rb_trees when reloc control has not been initialized.

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