有 V 友知道运行在 Zen2 CPU 上的 PVE 如何缓解最近的 Retbleed（CVE-2022-29*900）漏洞吗？ - V2EX
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edis0n0

有 V 友知道运行在 Zen2 CPU 上的 PVE 如何缓解最近的 Retbleed（CVE-2022-29*900）漏洞吗？

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  •   edis0n0 Aug 1, 2022 1510 views
    This topic created in 1382 days ago, the information mentioned may be changed or developed.
    两台公开的生产服务器 CPU 分别是 Ryzen 7 3700X 和 Ryzen 9 3900 ，都是 Zen2 的 CPU ，看论文貌似可以从虚拟机读宿主机内存中的密钥来实现逃逸，KVM 至今没发补丁有点慌。另外我看了下 Linode 的宿主机也是 Zen2 CPU ，也会受到影响吗？
  • zen2
  • CPU
  • ryzen
  • 机读宿
    3 replies
    ragnaroks
        1
    ragnaroks  
       Aug 1, 2022
    应该是通过更新 linux kernel 来修补，上周所有 debian 11 的机器都收到了新内核，不确定是否与此相关
    ragnaroks
        2
    ragnaroks  
       Aug 1, 2022
    通过初略检索更新日志 https://metadata.ftp-master.debian.org/changelogs/main/l/linux-signed-amd64/linux-signed-amd64_5.10.127+1_changelog ，我的机器应该也受到影响（ 5950x 跑的 PVE ）
    ragnaroks
        3
    ragnaroks  
       Aug 1, 2022
    没仔细看，原来 5950x 不受影响，那我可以继续打麻将了
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