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Huawei EulerOS: CVE-2021-47112: kernel security update

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Huawei EulerOS: CVE-2021-47112: kernel security update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/15/2024
Created
07/17/2024
Added
07/17/2024
Modified
07/17/2024

Description

In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Teardown PV features on boot CPU as well Various PV features (Async PF, PV EOI, steal time) work through memory shared with hypervisor and when we restore from hibernation we must properly teardown all these features to make sure hypervisor doesn't write to stale locations after we jump to the previously hibernated kernel (which can try to place anything there). For secondary CPUs the job is already done by kvm_cpu_down_prepare(), register syscore ops to do the same for boot CPU.

Solution(s)

  • huawei-euleros-2_0_sp9-upgrade-kernel
  • huawei-euleros-2_0_sp9-upgrade-kernel-tools
  • huawei-euleros-2_0_sp9-upgrade-kernel-tools-libs
  • huawei-euleros-2_0_sp9-upgrade-python3-perf

References

  • https://attackerkb.com/topics/cve-2021-47112
  • CVE - 2021-47112
  • EulerOS-SA-2024-1964
  • 查看数 706
  • 已创建
  • 最后回复

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