CVE-2026-72280: KVM: arm64: nv: Drop bogus WARN for write to ZCR_EL2

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-10-16

Description

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...

Affected products

Linux kernel: 6.11 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/5000bcae71c869cba6674c326fec2d8ad659ae3a
https://git.kernel.org/stable/c/6561597dba97e3e8479a9919bda172cf43eb902c
https://git.kernel.org/stable/c/7deadbc5dab5b8e2316364603bc6281129c8461c
https://git.kernel.org/stable/c/9f1667098c6ae7ec81a9a56859cfdacb822aa0d0

Get alerted when CVE-2026-72280 or the next vulnerability affects your stack