4.7

CVE-2021-26318

Side-channels Related to the x86 PREFETCH Instruction

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Amd ≫ Athlon Firmware Version -
   Amd ≫ Athlon Version -
Amd ≫ Athlon Pro Firmware Version -
   Amd ≫ Athlon Pro Version -
Amd ≫ Epyc Firmware Version -
   Amd ≫ Epyc Version -
Amd ≫ Ryzen Firmware Version -
   Amd ≫ Ryzen Version -
Amd ≫ Ryzen Pro Firmware Version -
   Amd ≫ Ryzen Pro Version -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.33% 0.252
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 4.7 1 3.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NIST 1.9 3.4 2.9
AV:L/AC:M/Au:N/C:P/I:N/A:N
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.

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.

https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1017
Vendor Advisory