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ubuntucveUbuntu.comUB:CVE-2018-20784
HistoryFeb 22, 2019 - 12:00 a.m.

CVE-2018-20784

2019-02-2200:00:00
ubuntu.com
ubuntu.com
9

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.013 Low

EPSS

Percentile

85.6%

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux-aws< 4.15.0-1047.49UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1059.63) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1099.110UNKNOWN
ubuntu18.04noarchlinux-azure< 5.0.0-1014.14~18.04.1UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1056.61UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1047.49~16.04.1UNKNOWN
ubuntu18.04noarchlinux< 4.15.0-60.67UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-170.199UNKNOWN
ubuntu18.04noarchlinux-azure-edge< 5.0.0-1014.14~18.04.1UNKNOWN
ubuntu16.04noarchlinux-azure-edge< 4.15.0-1056.61UNKNOWN
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9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.013 Low

EPSS

Percentile

85.6%

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