CVE-2018-7740

Aliases:UBUNTU-CVE-2018-7740DEBIAN-CVE-2018-7740
Advisory lineage Upstream: 0 Downstream: 13
Modified
Published: 07 Mar 2018, 08:00
Last modified:05 Aug 2024, 06:37

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.0 (nvd)
EPSS Score
0.58% LOW
1% probability +0.49%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

07 Mar 2018, 08:00
Published
Vulnerability first disclosed
05 Aug 2024, 06:37
Last Modified
Vulnerability information updated

Description

The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.58%• Percentile: 47%

Techniques & Countermeasures

  • CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

    The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04

  • debian•linux

    < 4.15.17-1 | < 4.15.17-1 | < 4.15.17-1 | < 4.15.17-1

  • ubuntu•linux

    all | < 4.4.0-143.169

  • ubuntu•linux-aws

    < 4.4.0-1039.42 | < 4.4.0-1077.87

  • ubuntu•linux-azure

    < 4.15.0-1013.13~16.04.2

  • ubuntu•linux-azure-6.11

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fde-5.15

    all

  • ubuntu•linux-fips

    < 4.4.0-1008.10

  • ubuntu•linux-gcp

    < 4.15.0-1014.14~16.04.1

  • ubuntu•linux-gcp-6.11

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-hwe

    < 4.15.0-24.26~16.04.1

  • ubuntu•linux-hwe-6.11

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1041.47

  • ubuntu•linux-lowlatency-hwe-6.11

    all

  • ubuntu•linux-lts-xenial

    < 4.4.0-143.169~14.04.2

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1104.112 | all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all | all

  • ubuntu•linux-snapdragon

    < 4.4.0-1108.113 | < 4.15.0-1053.57

  • debian•debian_linux

    7.0 | 8.0 | 9.0

  • linux•linux_kernel

    ≤ 4.15.7

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_server

    7.0

  • redhat•enterprise_linux_workstation

    7.0

  • redhat•virtualization_host

    4.0

References (14)