Vulnerability CVE-2018-20784
Published: 2019-02-22

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.

Type:

CWE-400

 (Uncontrolled Resource Consumption ('Resource Exhaustion'))

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Linux -> Linux kernel 

 References:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c40f7d74c741a907cfaeb73a7697081881c497d0
https://access.redhat.com/errata/RHSA-2019:1959
https://access.redhat.com/errata/RHSA-2019:1971
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.2
https://github.com/torvalds/linux/commit/c40f7d74c741a907cfaeb73a7697081881c497d0
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