PT-2017-13402 · Linux+3 · Linux Kernel+3

Published 2017-09-14 · Updated 2018-07-09 · CVE-2017-14340

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.13.2

Description The issue allows local users to cause a denial of service, resulting in a NULL pointer dereference and OOPS, via vectors related to setting an RHINHERIT flag on a directory. This is due to the XFS IS REALTIME INODE macro in fs/xfs/xfs linux.h not verifying that a filesystem has a realtime device.

Recommendations For Linux kernel versions prior to 4.13.2, update to version 4.13.2 or later to resolve the issue.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2017-2209

ALT-PU-2018-1991

CVE-2017-14340

DLA-1099-1

DSA-3981-1

MGASA-2017-0342

MGASA-2017-0343

MGASA-2017-0344

MGASA-2017-0345

MGASA-2017-0346

MGASA-2017-0347

RHSA-2017:2918

SUSE-SU-2017:2694-1

SUSE-SU-2017:3265-1

SUSE-SU-2018:0040-1

USN-3468-1

USN-3468-2

USN-3468-3

USN-3469-1

USN-3469-2

USN-3470-1

USN-3470-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 216

• https://github.com/torvalds/linux/commit/b31ff3cdf540110da4572e3e29bd172087af65cc · Patch
• https://ubuntu.com/security/notices/USN-3468-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-12153 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2017:2918 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3468-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-10911 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-11176 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3469-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-8632 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-14156 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0343.html · Security Note
• https://osv.dev/vulnerability/DSA-3981-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-14340 · Security Note
• https://ubuntu.com/security/notices/USN-3469-1 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2 · Vendor Advisory