PT-2018-6782 · Linux+3 · Linux Kernel+3

Wei Fang · Published 2017-07-12 · Updated 2018-10-18 · CVE-2017-18257

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 4.11

Description: The issue allows local users to cause a denial of service due to an integer overflow and loop. This can be achieved through crafted use of the open and fallocate system calls with an FS IOC FIEMAP ioctl, specifically exploiting the get data block function in fs/f2fs/data.c.

Recommendations: For Linux kernel versions prior to 4.11, update to version 4.11 or later to resolve the issue.

Fix

DoS

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2017-1854

ALT-PU-2018-1991

CVE-2017-18257

DSA-4188-1

OPENSUSE-SU-2018_1418-1

SUSE-SU-2018:1048-1

SUSE-SU-2018:1173-1

SUSE-SU-2018:1173-2

SUSE-SU-2018:1217-1

SUSE-SU-2018_1048-1

USN-3696-1

USN-3696-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 151

• https://github.com/torvalds/linux/commit/b86e33075ed1909d8002745b56ecf73b833db143 · Patch
• https://ubuntu.com/security/notices/USN-3696-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-18257 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-7755 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3696-2 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b86e33075ed1909d8002745b56ecf73b833db143 · Patch
• https://ubuntu.com/security/CVE-2018-5814 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-18257 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1048-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-18257 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-18257 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-10021 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-3665 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3696-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1000204 · Vendor Advisory