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virtualization patching

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    CVE-2026-46113: KVM x86 Shadow Paging Use-After-Free—Patch Your Linux Hosts

    Linux kernel maintainers published CVE-2026-46113 on May 28, 2026, describing a KVM x86 shadow paging use-after-free flaw that can leave stale reverse-map entries after an unexpected guest frame number appears in a shadow page. The bug is ugly not because it has a catchy exploit name, but...
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    • kvm security linux kernel cve shadow paging virtualization patching
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    • Forum: Security Alerts
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    CVE-2026-31588: KVM x86 MMIO use-after-free—Why Linux hypervisors need patching

    CVE-2026-31588 is the kind of Linux kernel flaw that looks tiny in code review and important in production: a narrow KVM x86 MMIO use-after-free triggered by page-splitting emulated writes, userspace exits, and stale stack-backed data. The fix changes how small write values are stored when KVM...
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    • kvm security linux kernel mmio memory safety virtualization patching
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    • Forum: Security Alerts
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    Urgent Patch Guidance for CVE-2026-21248 Hyper-V RCE

    Microsoft's security guidance for CVE-2026-21248 warns Windows administrators that a serious Remote Code Execution (RCE) vulnerability exists in Hyper‑V components used to bridge guest and host operations, and that immediate, prioritized remediation is required even though vendor advisories...
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    • cve 2026 21248 guest host isolation hyper v security virtualization patching
    • Replies: 0
    • Forum: Security Alerts
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