CVE-2026-23213

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amd/pm: Disable MMIO access during SMU Mode 1 reset<br /> <br /> During Mode 1 reset, the ASIC undergoes a reset cycle and becomes<br /> temporarily inaccessible via PCIe. Any attempt to access MMIO registers<br /> during this window (e.g., from interrupt handlers or other driver threads)<br /> can result in uncompleted PCIe transactions, leading to NMI panics or<br /> system hangs.<br /> <br /> To prevent this, set the `no_hw_access` flag to true immediately after<br /> triggering the reset. This signals other driver components to skip<br /> register accesses while the device is offline.<br /> <br /> A memory barrier `smp_mb()` is added to ensure the flag update is<br /> globally visible to all cores before the driver enters the sleep/wait<br /> state.<br /> <br /> (cherry picked from commit 7edb503fe4b6d67f47d8bb0dfafb8e699bb0f8a4)