CVE-2021-26318
4.7
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability: 1.0 / Impact: 3.6
Source: NVD
Description
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.
Affected (5)
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| All versions |
| Running on/with | Platform Versions |
|---|---|
Amd Athlon | All versions |
Configuration B
| Vulnerable Software | Affected Versions |
|---|---|
| All versions |
| Running on/with | Platform Versions |
|---|---|
Amd Athlon Pro | All versions |
Configuration C
| Vulnerable Software | Affected Versions |
|---|---|
| All versions |
| Running on/with | Platform Versions |
|---|---|
Amd Epyc | All versions |
Configuration D
| Vulnerable Software | Affected Versions |
|---|---|
| All versions |
| Running on/with | Platform Versions |
|---|---|
Amd Ryzen | All versions |
Configuration E
| Vulnerable Software | Affected Versions |
|---|---|
| All versions |
| Running on/with | Platform Versions |
|---|---|
Amd Ryzen Pro | All versions |
Related CWEs
CWE-203
Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
CWE-208
Observable Timing Discrepancy
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
References (2)
Source: psirt@amd.com
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Timeline
No history available yet.