PT-2018-6774 · Linux+3 · Linux Kernel+3

Published 2017-07-12 · Updated 2019-04-08 · CVE-2017-18249

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 4.12

Description: The issue is related to the add free nid function in fs/f2fs/node.c, which does not properly track an allocated nid. This can be exploited by local users to cause a denial of service due to a race condition, or possibly have other unspecified impacts via concurrent threads.

Recommendations: For versions prior to 4.12, update to version 4.12 or later to resolve the issue.

Fix

DoS

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

ALT-PU-2017-1854

ALT-PU-2018-1991

CVE-2017-18249

DLA-1715-1

OPENSUSE-SU-2018_1773-1

SUSE-SU-2018:1772-1

SUSE-SU-2018:1816-1

SUSE-SU-2018:1855-1

SUSE-SU-2018:1855-2

SUSE-SU-2019:0470-1

SUSE-SU-2019:0901-1

SUSE-SU-2019_0901-1

USN-3932-1

USN-3932-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 307

• https://github.com/torvalds/linux/commit/30a61ddf8117c26ac5b295e1233eaa9629a94ca3 · Patch
• https://ubuntu.com/security/CVE-2018-14610 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13097 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-18249 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=30a61ddf8117c26ac5b295e1233eaa9629a94ca3 · Patch
• https://ubuntu.com/security/CVE-2018-13099 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-18249 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9213 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-18249 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-14612 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3932-2 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1715-1 · Vendor Advisory
• https://usn.ubuntu.com/3932-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1855-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3932-1 · Vendor Advisory