Ubuntu.comUB:CVE-2021-26318CVE-2021-26318
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
12.6%
A timing and power-based side channel attack leveraging the x86 PREFETCH
instructions on some AMD CPUs could potentially result in leaked kernel
address space information.
Notes
| Author | Note |
|---|---|
| mdeslaur | no details on microcode update as of 2022-01-05 |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | amd64-microcode | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | amd64-microcode | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | amd64-microcode | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | amd64-microcode | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | amd64-microcode | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | amd64-microcode | < any | UNKNOWN |
Related
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
12.6%