CVE-2026-98720
In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Force MSR bitmap refresh if runtime eVMCS controls are modif
CVSS
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No CVSS
EPSS
0.2%
p6
KEV
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Exploit Today
2
0-100
Published: Oct 18, 2026 · Last modified: Oct 19, 2026
Not enough EPSS history yet.
In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Force MSR bitmap refresh if runtime eVMCS controls are modified Force a refresh of the vmcs02 MSR bitmap during nested VM-Enter if the runtime eVMCS controls (pin, primary, secondary, etc.) are being updated. If L1 isn't intercepting TPR writes, runs L2 with TPR virtualization, and then runs the same L2 with TPR virtualization disabled, KVM will fail to refresh msr_bitmap02 and leave TPR in passthrough mode even though TPR virtualization is disabled. I.e. failure to refresh the bitmap lets L2 (or L1 by proxy) read and write L0's TPR.
- git.kernel.orghttps://git.kernel.org/stable/c/1e497e3bdab6983deb68a1d26b488027deb4527f
- git.kernel.orghttps://git.kernel.org/stable/c/2abb25273c82061dd4670690c81c319c03740bf6
- git.kernel.orghttps://git.kernel.org/stable/c/2db11598b59f16ddb6420693f9a4ac4efc3d4789
- git.kernel.orghttps://git.kernel.org/stable/c/f6189e26d0237e47e2f04f9cb1e43fd19a9b2f3a
No related CVEs by CWE or product.