Ubuntu.comUB:CVE-2021-3715CVE-2021-3715
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.3%
A flaw was found in the “Routing decision” classifier in the Linux kernel’s
Traffic Control networking subsystem in the way it handled changing of
classification filters, leading to a use-after-free condition. This flaw
allows unprivileged local users to escalate their privileges on the system.
The highest threat from this vulnerability is to confidentiality,
integrity, as well as system availability.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < 4.15.0-99.100 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-179.209) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1066.70 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1067.71) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1107.118) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1066.70~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-azure | < 4.15.0-1082.92~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1082.92~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gcp | < 4.15.0-1061.65) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 24.04 | noarch | linux-gke | < any | UNKNOWN |
References
access.redhat.com/security/cve/CVE-2021-3715
git.kernel.org/linus/ef299cc3fa1a9e1288665a9fdc8bff55629fd359 (5.6)
launchpad.net/bugs/cve/CVE-2021-3715
nvd.nist.gov/vuln/detail/CVE-2021-3715
security-tracker.debian.org/tracker/CVE-2021-3715
www.cve.org/CVERecord?id=CVE-2021-3715
www.openwall.com/lists/oss-security/2021/09/07/1
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.3%