When calling the KVM_GET_DEBUGREGS ioctl, on some configurations (32-bit systems), there might be some unitialized portions of the kvm_debugregs structure that could be copied to userspace. Upstream patch & commit: https://lore.kernel.org/kvm/20230214103304.3689213-1-gregkh@linuxfoundation.org/ https://github.com/torvalds/linux/commit/2c10b61421a28e95a46ab489fd56c0f442ff6952
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 2179894]
This was fixed for Fedora with the 6.1.13 stable kernel updates.