CVE-2026-98637
KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure pkvm_vcpu_init_sve() clears KVM_ARM_VCPU_SVE in kvm->arch.vcpu_features when it fails, but vcpu_has_sve() tests KVM_ARCH_FLAG_GUEST_HAS_SVE, which is left set. Later vCPUs on that VM then skip the SVE setup and register with a NULL sve_state, which the guest's first FP access hands to sve_load_state(). Return the error without touching vcpu_features.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 18, 2026 |
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Affected Versions
Linux / Linux
5db1bef933427aa467ad89c7b695a84a6b4afe16 < bd46b41f412fb81c50bac1a0929ec31320f3a807 5db1bef933427aa467ad89c7b695a84a6b4afe16 < f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb 5db1bef933427aa467ad89c7b695a84a6b4afe16 < a1b3c788ad31837e348075e93dbba3f447492776
Linux / Linux
6.16