CVE-2018-20784
- Source
- https://cve.org/CVERecord?id=CVE-2018-20784
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-20784.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2018-20784
- Downstream
- Related
- Published
- 2019-02-22T15:29:00.237Z
- Modified
- 2026-03-12T22:52:02.768292Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfsrq's, which allows attackers to cause a denial of service (infinite loop in updateblocked_averages) or possibly have unspecified other impact by inducing a high load.
- References
-
- https://usn.ubuntu.com/4211-2/
- https://access.redhat.com/errata/RHSA-2019:1959
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.2
- https://usn.ubuntu.com/4115-1/
- https://usn.ubuntu.com/4118-1/
- https://usn.ubuntu.com/4211-1/
- https://access.redhat.com/errata/RHSA-2019:1971
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c40f7d74c741a907cfaeb73a7697081881c497d0
- https://github.com/torvalds/linux/commit/c40f7d74c741a907cfaeb73a7697081881c497d0
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-20784.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "4.13"
},
{
"fixed": "4.14.93"
}
]
},
{
"events": [
{
"introduced": "4.19"
},
{
"fixed": "4.19.15"
}
]
},
{
"events": [
{
"introduced": "4.20"
},
{
"fixed": "4.20.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.0-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "14.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8"
}
]
}
]