CVE-2026-98637
- Source
- https://cve.org/CVERecord?id=CVE-2026-98637
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98637.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-98637
- Downstream
- Published
- 2026-10-18T15:20:08Z
- Modified
- 2026-10-20T02:31:00Z
- Summary
- KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98637.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/a1b3c788ad31837e348075e93dbba3f447492776
- https://git.kernel.org/stable/c/bd46b41f412fb81c50bac1a0929ec31320f3a807
- https://git.kernel.org/stable/c/f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98637.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-98637