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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1047.49 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1059.63) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1099.110 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure | < 5.0.0-1014.14~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1056.61 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1047.49~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux | < 4.15.0-60.67 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-170.199 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-edge | < 5.0.0-1014.14~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure-edge | < 4.15.0-1056.61 | UNKNOWN |
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c40f7d74c741a907cfaeb73a7697081881c497d0
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.2
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20784
git.kernel.org/linus/c40f7d74c741a907cfaeb73a7697081881c497d0
github.com/torvalds/linux/commit/c40f7d74c741a907cfaeb73a7697081881c497d0
launchpad.net/bugs/cve/CVE-2018-20784
nvd.nist.gov/vuln/detail/CVE-2018-20784
security-tracker.debian.org/tracker/CVE-2018-20784
ubuntu.com/security/notices/USN-4115-1
ubuntu.com/security/notices/USN-4118-1
ubuntu.com/security/notices/USN-4211-1
ubuntu.com/security/notices/USN-4211-2
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%