CVE-2018-14617 Information

Description

An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data and is mounted read-only without a metadata directory.

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=200297 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://usn.ubuntu.com/3821-1/ https://usn.ubuntu.com/3821-2/ https://usn.ubuntu.com/4094-1/ https://usn.ubuntu.com/4118-1/ https://www.debian.org/security/2018/dsa-4308 https://www.spinics.net/lists/linux-fsdevel/msg130021.html

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