CVE-2026-89931
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit
Always check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a nested VM-Exit to ensure the request is cleared, even when KVM was built with CONFIG_KVM_HYPERV=n, as KVM subtly relies on the "check" to clear the flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM manages to bail from VM-Enter without processing the request, and then emulates VMLAUNCH or VMRESUME.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 < ae190f2439ca30067927077bf570d4c5edf07a0f | affected |
| Linux | Linux | b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 < 674a3244f07f323f21a106a7bdcaebb6db6a5058 | affected |
| Linux | Linux | b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 < bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5 | affected |
| Linux | Linux | b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 < 11722439fb206c88e6f31be54173efa9880b4ccb | affected |
| Linux | Linux | 6.8 | affected |
| Linux | Linux | 0 < 6.8 | unaffected |
| Linux | Linux | 6.12.110 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.51 <= 6.18.* | unaffected |
| Linux | Linux | 7.2.5 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/ae190f2439ca30067927077bf570d4c5edf07a0f
- https://git.kernel.org/stable/c/674a3244f07f323f21a106a7bdcaebb6db6a5058
- https://git.kernel.org/stable/c/bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5
- https://git.kernel.org/stable/c/11722439fb206c88e6f31be54173efa9880b4ccb
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.