CVE-2018-14612

HIGH

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.

References

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://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/

Details

Source: MITRE

Published: 2018-07-27

Updated: 2019-04-03

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 7.1

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 8.6

Severity: HIGH

CVSS v3.0

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM