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THREAT OPS › Threat News › [NVD] CVE-2026-64308 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Do not initialize SNP for ioctl(SNP_VLEK_LOAD) Sashiko notes: > if SEV initialization fails and KVM is actively running normal VMs, could a > userspace process trigger this code path via /dev/sev

[NVD] CVE-2026-64308 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Do not initialize SNP for ioctl(SNP_VLEK_LOAD) Sashiko notes: > if SEV initialization fails and KVM is actively running normal VMs, could a > userspace process trigger this code path via /dev/sev

lownvdPublished 2026-07-25

CVE-2026-64308 CVSS: 5.5 MEDIUM Published: 2026-07-25T10:17:11.917

In the Linux kernel, the following vulnerability has been resolved:

crypto: ccp - Do not initialize SNP for ioctl(SNP_VLEK_LOAD)

Sashiko notes:

> if SEV initialization fails and KVM is actively running normal VMs, could a > userspace process trigger this code path via /dev/sev ioctls (e.g., > SEV_PDH_GEN) and zero out MSR_VM_HS

Indicators of compromise

CVE-2026-64308cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-64308