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kernel: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation

🗓️ 28 Sep 2026 19:09:30Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Linux kernel KVM for arm64 misinterprets negative S1 walk levels causing incomplete invalidation.

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circl
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CVE-2026-89775
16 Sep 202615:20
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16 Sep 202608:39
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CVE-2026-89775 KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
16 Sep 202608:39
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18 Sep 202606:05
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24 Sep 202600:00
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16 Sep 202609:17
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.2aarch64kernel6.12.0-211.61.1.el10_2kernel-6.12.0-211.61.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2ppc64lekernel6.12.0-211.61.1.el10_2kernel-6.12.0-211.61.1.el10_2.ppc64le.rpm
Red Hat Enterprise Linux10.2s390xkernel6.12.0-211.61.1.el10_2kernel-6.12.0-211.61.1.el10_2.s390x.rpm
Red Hat Enterprise Linux10.2x86_64kernel6.12.0-211.61.1.el10_2kernel-6.12.0-211.61.1.el10_2.x86_64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k6.12.0-211.61.1.el10_2kernel-64k-6.12.0-211.61.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-core6.12.0-211.61.1.el10_2kernel-64k-core-6.12.0-211.61.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug6.12.0-211.61.1.el10_2kernel-64k-debug-6.12.0-211.61.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-core6.12.0-211.61.1.el10_2kernel-64k-debug-core-6.12.0-211.61.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-debuginfo6.12.0-211.61.1.el10_2kernel-64k-debug-debuginfo-6.12.0-211.61.1.el10_2.aarch64.rpm
Red Hat Enterprise Linux10.2aarch64kernel-64k-debug-devel6.12.0-211.61.1.el10_2kernel-64k-debug-devel-6.12.0-211.61.1.el10_2.aarch64.rpm
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28 Sep 2026 22:36Current
6Medium risk
Vulners AI Score6
CVSS 3.19.3
EPSS0.0023
3