Vulnerability CVE-2018-14612
Published: 2018-07-27

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.

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.1/10
6.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Linux kernel 

 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/
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