In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Re-translate VNCR before injecting abort KVM faults in the VNCR page with FOLL_WRITE whenever the guest aborts for a write, similar to how a regular stage-2 mapping is handled. It is entirely possible that the guest reads from the VNCR before writing to it, in which case the PFN could only be read-only. Invalidate the VNCR TLB and re-fetch the translation upon taking a VNCR abort, allowing the host mapping to be faulted in for write the second time around. Interestingly enough, this also satisfies the ordering requirements of FEAT_ETS2/3 between descriptor updates and MMU faults.

A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) for arm64 systems. This vulnerability occurs when a guest operating system attempts to access the Virtualization Nested Control Register (VNCR) page. If the guest reads from VNCR before writing to it, KVM may incorrectly handle the memory access, potentially leading to unexpected behavior or instability within the virtualized environment.

Red Hat Enterprise Linux 10 Fix deferred kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-72278 https://nvd.nist.gov/vuln/detail/CVE-2026-72278 https://lore.kernel.org/linux-cve-announce/2026081558-CVE-2026-72278-d0db@gregkh/T