CVE-2023-52519

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> HID: intel-ish-hid: ipc: Disable and reenable ACPI GPE bit<br /> <br /> The EHL (Elkhart Lake) based platforms provide a OOB (Out of band)<br /> service, which allows to wakup device when the system is in S5 (Soft-Off<br /> state). This OOB service can be enabled/disabled from BIOS settings. When<br /> enabled, the ISH device gets PME wake capability. To enable PME wakeup,<br /> driver also needs to enable ACPI GPE bit.<br /> <br /> On resume, BIOS will clear the wakeup bit. So driver need to re-enable it<br /> in resume function to keep the next wakeup capability. But this BIOS<br /> clearing of wakeup bit doesn&amp;#39;t decrement internal OS GPE reference count,<br /> so this reenabling on every resume will cause reference count to overflow.<br /> <br /> So first disable and reenable ACPI GPE bit using acpi_disable_gpe().