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Linux Kernel Security Linux Kernel Security @linkersec · 4.72K subscribers
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Januscape: Guest-to-Host Escape in KVM/x86

Hyunwoo Kim published an article about a use-after-free vulnerability in the shadow MMU emulation of KVM/x86 (CVE-2026-53359). Both Intel (VMX) and AMD (SVM) code is affected.

The article only covers achieving a kernel crash via this bug, but the vulnerability can also be exploited to escape the guest VM. The author used this bug to pwn a kvmCTF instance.
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