CVEvulnerability

CVE-2021-26318

4.7 MEDIUM Published 2021-10-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-10-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
1.9 LOW — AV:L/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
CWE-203, CWE-208

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 configurations

• amd athlon firmware • amd athlon pro firmware • amd epyc firmware • amd ryzen firmware • amd ryzen pro firmware

Related

Weakness · CWE (2)

  • CWE-203 Observable Discrepancy weakness
  • CWE-208 Observable Timing Discrepancy weakness

References