NVD Vulnerability Detail
Search Exploit, PoC
CVE-2021-26342
Summary

In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.

Publication Date May 12, 2022, 2:15 a.m.
Registration Date May 12, 2022, 10 a.m.
Last Update Nov. 21, 2024, 2:56 p.m.
CVSS3.1 : LOW
スコア 3.3
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 低
攻撃に必要な特権レベル(PR) 低
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) 低
完全性への影響(I) なし
可用性への影響(A) なし
CVSS2.0 : LOW
Score 2.1
Vector AV:L/AC:L/Au:N/C:P/I:N/A:N
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 低
攻撃前の認証要否(Au) 不要
機密性への影響(C) 低
完全性への影響(I) なし
可用性への影響(A) なし
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:*
Configuration17 or higher or less more than less than
cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:*
Configuration18 or higher or less more than less than
cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:*
Configuration19 or higher or less more than less than
cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:*
Configuration20 or higher or less more than less than
cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7773x:-:*:*:*:*:*:*:*
Configuration21 or higher or less more than less than
cpe:2.3:o:amd:epyc_7473x_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7473x:-:*:*:*:*:*:*:*
Configuration22 or higher or less more than less than
cpe:2.3:o:amd:epyc_7573x_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7573x:-:*:*:*:*:*:*:*
Configuration23 or higher or less more than less than
cpe:2.3:o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:* milanpi-sp3_1.0.0.7
execution environment
1 cpe:2.3:h:amd:epyc_7373x:-:*:*:*:*:*:*:*
Configuration24 or higher or less more than less than
cpe:2.3:o:amd:epyc_7001_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7001:-:*:*:*:*:*:*:*
Configuration25 or higher or less more than less than
cpe:2.3:o:amd:epyc_7251_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7251:-:*:*:*:*:*:*:*
Configuration26 or higher or less more than less than
cpe:2.3:o:amd:epyc_7261_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7261:-:*:*:*:*:*:*:*
Configuration27 or higher or less more than less than
cpe:2.3:o:amd:epyc_7281_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7281:-:*:*:*:*:*:*:*
Configuration28 or higher or less more than less than
cpe:2.3:o:amd:epyc_7301_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7301:-:*:*:*:*:*:*:*
Configuration29 or higher or less more than less than
cpe:2.3:o:amd:epyc_7351_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7351:-:*:*:*:*:*:*:*
Configuration30 or higher or less more than less than
cpe:2.3:o:amd:epyc_7351p_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7351p:-:*:*:*:*:*:*:*
Configuration31 or higher or less more than less than
cpe:2.3:o:amd:epyc_7371_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7371:-:*:*:*:*:*:*:*
Configuration32 or higher or less more than less than
cpe:2.3:o:amd:epyc_7401_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7401:-:*:*:*:*:*:*:*
Configuration33 or higher or less more than less than
cpe:2.3:o:amd:epyc_7401p_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7401p:-:*:*:*:*:*:*:*
Configuration34 or higher or less more than less than
cpe:2.3:o:amd:epyc_7451_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7451:-:*:*:*:*:*:*:*
Configuration35 or higher or less more than less than
cpe:2.3:o:amd:epyc_7501_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7501:-:*:*:*:*:*:*:*
Configuration36 or higher or less more than less than
cpe:2.3:o:amd:epyc_7551_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7551:-:*:*:*:*:*:*:*
Configuration37 or higher or less more than less than
cpe:2.3:o:amd:epyc_7551p_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7551p:-:*:*:*:*:*:*:*
Configuration38 or higher or less more than less than
cpe:2.3:o:amd:epyc_7601_firmware:*:*:*:*:*:*:*:* naplespi-sp3_1.0.0.h
execution environment
1 cpe:2.3:h:amd:epyc_7601:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
複数の Advanced Micro Devices (AMD) 製品における脆弱性
Title 複数の Advanced Micro Devices (AMD) 製品における脆弱性
Summary

EPYC 7763 ファームウェア、EPYC 7713p ファームウェア、EPYC 7713 ファームウェア等複数の Advanced Micro Devices (AMD) 製品には、不特定の脆弱性が存在します。

Possible impacts 情報を取得される可能性があります。
Solution

ベンダアドバイザリまたはパッチ情報が公開されています。参考情報を参照して適切な対策を実施してください。
Publication Date Jan. 29, 2021, midnight
Registration Date Aug. 4, 2023, 5:30 p.m.
Last Update Aug. 4, 2023, 5:30 p.m.
Affected System
Advanced Micro Devices (AMD)
EPYC 72f3 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7313 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7313p ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7343 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 73f3 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7413 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7443 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7443p ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7453 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 74f3 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7513 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7543 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7543p ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 75f3 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7643 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7663 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7713 ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7713p ファームウェア milanpi-sp3_1.0.0.7 未満
EPYC 7763 ファームウェア milanpi-sp3_1.0.0.7 未満
epyc 7773x ファームウェア milanpi-sp3_1.0.0.7 未満
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
その他
Change Log
No Changed Details Date of change
1 [2023年08月04日]
  掲載		 Aug. 4, 2023, 5:30 p.m.