UbuntuUSN-4343-1Linux kernel vulnerability
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
High
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
13.3%
Releases
- Ubuntu 20.04 LTS
Packages
- linux - Linux kernel
Details
Al Viro discovered that the Linux kernel for s390x systems did not properly
perform page table upgrades for kernel sections that use secondary address
mode. A local attacker could use this to cause a denial of service (system
crash) or execute arbitrary code.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Ubuntu | 20.04 | noarch | linux-image-5.4.0-28-generic | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | kernel-signed-image-5.4.0-28-generic-di | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | linux-image-5.4.0-28-generic-dbgsym | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | linux-image-5.4.0-28-lowlatency | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | linux-image-5.4.0-28-lowlatency-dbgsym | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | linux-image-5.4.0-28-generic-lpae | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | block-modules-5.4.0-28-generic-di | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | crypto-modules-5.4.0-28-generic-di | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | fat-modules-5.4.0-28-generic-di | < 5.4.0-28.32 | UNKNOWN |
| Ubuntu | 20.04 | noarch | fb-modules-5.4.0-28-generic-di | < 5.4.0-28.32 | UNKNOWN |
References
Related
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1 High
AI Score
Confidence
High
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
13.3%