5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
5.3%
A lack of CPU resource in the Linux kernel tracing module functionality in
versions prior to 5.14-rc3 was found in the way user uses trace ring buffer
in a specific way. Only privileged local users (with CAP_SYS_ADMIN
capability) could use this flaw to starve the resources causing denial of
service.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux-aws-5.11 | < 5.11.0-1019.20~20.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < 5.4.0-1057.60~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1112.119~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 14.04 | noarch | linux-azure | < 4.15.0-1124.137~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1124.137~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1059.62 | UNKNOWN |
ubuntu | 21.04 | noarch | linux-azure | < 5.11.0-1017.18 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-4.15 | < 4.15.0-1124.137 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-5.11 | < 5.11.0-1017.18~20.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-5.4 | < 5.4.0-1059.62~18.04.1 | UNKNOWN |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3679
git.kernel.org/linus/67f0d6d9883c13174669f88adac4f0ee656cc16a
launchpad.net/bugs/cve/CVE-2021-3679
nvd.nist.gov/vuln/detail/CVE-2021-3679
security-tracker.debian.org/tracker/CVE-2021-3679
ubuntu.com/security/notices/USN-5091-1
ubuntu.com/security/notices/USN-5091-2
ubuntu.com/security/notices/USN-5092-1
ubuntu.com/security/notices/USN-5092-2
ubuntu.com/security/notices/USN-5094-1
ubuntu.com/security/notices/USN-5094-2
ubuntu.com/security/notices/USN-5096-1
ubuntu.com/security/notices/USN-5115-1
ubuntu.com/security/notices/USN-5299-1
ubuntu.com/security/notices/USN-5343-1
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
5.3%