CVE-2025-38508

In the Linux kernel, the following vulnerability has been resolved: x86/sev: Use TSCFACTOR for Secure TSC frequency calculation When using Secure TSC, the GUESTTSCFREQ MSR reports a frequency based on the nominal P0 frequency, which deviates slightly typically 0.2% from the actual mean TSC...

CVE-2025-38508

In the Linux kernel, the following vulnerability has been resolved: x86/sev: Use TSCFACTOR for Secure TSC frequency calculation When using Secure TSC, the GUESTTSCFREQ MSR reports a frequency based on the nominal P0 frequency, which deviates slightly typically 0.2% from the actual mean TSC...

CVE-2025-38508

The CVE-2025-38508 entry describes a Linux kernel vulnerability in x86/SEV: when Secure TSC is enabled, GUEST_TSC_FREQ is derived from the P0 frequency and diverges from the mean TSC frequency, causing clock skew in SEV-SNP VMs and resulting in hrtimer interrupts firing earlier than expected. The...