CVE-2026-68081

CVE CVE-2026-68081EUVD EUVD-2026-54774Published 2026-08-08T09:17:44.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state Put all vmcs12 pages if KVM synthesizes a nested VM-Exit due to invalid guest while emulating VMLAUNCH or VMRESUME. The invalid guest state path doesn't use nested_vmx_vmexit() as that API is intended to be used if and only if L2 is active, and the open coded equivalent neglects to put the vmcs12 pages. Failure to put the vmcs12 pages leaks any pinned pages (and/or mappings) if L1 retries VMLAUNCH/VMRESUME. Note, the !from_vmenter scenario doesn't suffer the same problem, as vmx_get_nested_state_pages() only gets/pins/maps the vmcs12 pages if L2 is active, i.e. if a "full" VM-Exit is guaranteed before KVM will retry getting vmcs12 pages.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.1.5; 96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <2f2312c422fd2695da772cecb30c69994b795964; patch: 7.2-rc4; 96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <2c87a087c20632d68920272173b5d7c47f9bcf70; 5.2; 96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <7996013b85687034d2e820cef94d6404192e3a3d; patch: 6.18.40; patch: 0

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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