CVE-2024-53196 is a vulnerability in the Linux kernel's KVM subsystem for arm64 architecture. It involves improper handling of aborted MMIO instructions where KVM incorrectly retires the instruction despite a pending synchronous external abort. This can cause kernel warnings and potentially impact system stability. The issue arises from a bug in the KVM user API (UAPI) handling of MMIO aborts. The vulnerability has a medium severity score of 5.5 and does not affect confidentiality or integrity but impacts availability.