PT-2018-18250 · Linux+5 · Linux Kernel+5

Nic Losby · Published 2018-03-07 · Updated 2019-03-18 · CVE-2018-7740

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 4.15.8

Description: The issue allows local users to cause a denial of service via a crafted application that makes mmap system calls and has a large pgoff argument to the remap file pages system call. This is due to a problem in the resv map release function in mm/hugetlb.c.

Recommendations: For Linux kernel versions prior to 4.15.8, update to version 4.15.8 or later to resolve the issue.

Exploit

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2018-1557

ALT-PU-2019-1433

CESA-2018_3083

CVE-2018-7740

DLA-1369-1

DSA-4187-1

DSA-4188-1

OPENSUSE-SU-2018_0972-1

RHSA-2018:3083

RHSA-2018:3096

RHSA-2018_3083

RHSA-2018_3096

SUSE-SU-2018:1048-1

SUSE-SU-2018:1173-1

SUSE-SU-2018:1173-2

SUSE-SU-2018:1217-1

USN-3910-1

USN-3910-2

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 151

• 🔥 https://bugzilla.kernel.org/show_bug.cgi?id=199037 · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2018:1217-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-7740 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4187-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2018:3096 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4188-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-7740 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-7740 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3910-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-6133 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-18241 · Vendor Advisory
• https://debian.org/security/2018/dsa-4187 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1173-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-7740 · Security Note
• https://usn.ubuntu.com/3910-2 · Vendor Advisory