NULL pointer dereference vulnerability in ext4_fill_super function in Linux kernel through 4.15.15

NULL pointer dereference vulnerability in ext4_fill_super function in Linux kernel through 4.15.15

CVE-2018-1094 · MEDIUM Severity

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.

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