CVE-2026-72280
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
In the Linux kernel, KVM arm64 (nested mode) has a bogus WARN when a guest writes to the ZCR_EL2 sysreg alias in a nested context. The fix removes this warning, which could cause a hypervisor panic.
Risk Assessment
The bogus warning can lead to unexpected hypervisor panic, disrupting all virtual machines on the host.
Recommendation
Apply the Linux kernel update that removes the bogus WARN for ZCR_EL2.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2 It is entirely possible for a guest to write to the ZCR_EL2 sysreg alias while in a nested context, as it is expected if FEAT_NV2 is advertised to the L1 hypervisor. Get rid of the bogus WARN which, since the hyp vectors were installed at this point, has the effect of a hyp_panic...