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kernel: TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED leading to guest malfunctioning

🗓️ 09 May 2023 10:01:50Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Flaw in the Linux kernel x86 virtual machine manager mishandles TLB flush during preemption.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9x86_64kernel-rt0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-core0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-core-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug-core0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-core-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug-debuginfo0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-debuginfo-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug-devel0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-devel-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug-kvm0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-kvm-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug-modules0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-modules-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug-modules-core0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-modules-core-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
Red Hat Enterprise Linux9x86_64kernel-rt-debug-modules-extra0:5.14.0-284.11.1.rt14.296.el9_2kernel-rt-debug-modules-extra-0:5.14.0-284.11.1.rt14.296.el9_2.x86_64.rpm
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28 Jun 2026 12:39Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.17.8
EPSS0.00323
SSVC
4