CVE-2018-14612 Information

Description

An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in btrfs_root_node() when mounting a crafted btrfs image because of a lack of chunk block group mapping validation in btrfs_read_block_groups in fs/btrfs/extent-tree.c and a lack of empty-tree checks in check_leaf in fs/btrfs/tree-checker.c.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/104917 https://bugzilla.kernel.org/show_bug.cgi?id=199847 https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://patchwork.kernel.org/patch/10503403/ https://patchwork.kernel.org/patch/10503413/ https://usn.ubuntu.com/3932-1/ https://usn.ubuntu.com/3932-2/ https://usn.ubuntu.com/4094-1/ https://usn.ubuntu.com/4118-1/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5