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Red Hat: CVE-2016-4020: Moderate: qemu-kvm security, bug fix, and enhancement update (RHSA-2017:1856)

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Red Hat: CVE-2016-4020: Moderate: qemu-kvm security, bug fix, and enhancement update (RHSA-2017:1856)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
05/25/2016
Created
07/25/2018
Added
08/05/2017
Modified
02/14/2023

Description

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).

Solution(s)

  • redhat-upgrade-qemu-img
  • redhat-upgrade-qemu-kvm
  • redhat-upgrade-qemu-kvm-common
  • redhat-upgrade-qemu-kvm-debuginfo
  • redhat-upgrade-qemu-kvm-tools

References

  • 86067
  • DLA-573-1
  • DLA-574-1
  • GLSA-201609-01
  • CVE-2016-4020
  • RHSA-2017:1856
  • RHSA-2017:2392
  • RHSA-2017:2408
  • USN-2974-1
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