CVE-2018-20784

kernel: infinite loop in update_blocked_averages() in kernel/sched/fair.c leading to denial of service

Published Feb 22, 2019 CVSS 3.1 · 9.8 Critical EPSS 4.2% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2018-13327 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.
Ubuntu USN Ubuntu USN USN-4115-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4118-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-4211-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4211-2 Linux kernel (Xenial HWE) vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 5, 2024, 12:12 PM
Reserved
Feb 22, 2019, 12:00 AM
Status
Modified
Published
Feb 22, 2019, 3:29 PM
Modified
Jun 17, 2026, 1:53 AM
Severity
Moderate
Public date
Dec 28, 2018, 12:00 AM