Ubuntu.comUB:CVE-2021-4154CVE-2021-4154
8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 use-after-free flaw was found in cgroup1_parse_param in
kernel/cgroup/cgroup-v1.c in the Linux kernel’s cgroup v1 parser. A local
attacker with a user privilege could cause a privilege escalation by
exploiting the fsconfig syscall parameter leading to a container breakout
and a denial of service on the system.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 20.04 | noarch | linux | < 5.4.0-88.99 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1057.60 | UNKNOWN |
| 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 | 20.04 | noarch | linux-azure | < 5.4.0-1059.62 | 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 |
| ubuntu | 22.04 | noarch | linux-azure-fde | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure-fde | < 5.4.0-1059.62 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-bluefield | < 5.4.0-1019.22 | UNKNOWN |
Related
8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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%