1. Home
  2. Vulnerabilities
  3. CVE-2018-20784

CVE-2018-20784

CVSS v3.1 9.8 (Critical)
98% Progress
CVSS v2.0 7.5 (High)
75% Progress
EPSS 1.46 % (87th)
1.46% Progress
Affected Products 4
Advisories 10
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.

Weaknesses
CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
CVE Status
PUBLISHED
CNA
MITRE
Published Date
2019-02-22 15:29:00
(5 years ago)
Updated Date
2021-06-02 15:28:24
(3 years ago)

Affected Products

Canonical

Linux

Redhat

Configuration #1

    CPE23 From Up To
  Linux Kernel from 4.13 version and prior 4.14.93 version cpe:2.3:o:linux:linux_kernel >= 4.13 < 4.14.93
  Linux Kernel from 4.19 version and prior 4.19.15 version cpe:2.3:o:linux:linux_kernel >= 4.19 < 4.19.15
  Linux Kernel from 4.20 version and prior 4.20.2 version cpe:2.3:o:linux:linux_kernel >= 4.20 < 4.20.2
  Linux Kernel 5.0 Rc1 cpe:2.3:o:linux:linux_kernel:5.0:rc1

Configuration #2

    CPE23 From Up To
  Canonical Ubuntu Linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm
  Canonical Ubuntu Linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm
  Canonical Ubuntu Linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts

Configuration #3

    CPE23 From Up To
  Redhat Enterprise Linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0
  Redhat Enterprise Linux for Real Time 8 cpe:2.3:o:redhat:enterprise_linux_for_real_time:8