CVE-2024-53072

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> platform/x86/amd/pmc: Detect when STB is not available<br /> <br /> Loading the amd_pmc module as:<br /> <br /> amd_pmc enable_stb=1<br /> <br /> ...can result in the following messages in the kernel ring buffer:<br /> <br /> amd_pmc AMDI0009:00: SMU cmd failed. err: 0xff<br /> ioremap on RAM at 0x0000000000000000 - 0x0000000000ffffff<br /> WARNING: CPU: 10 PID: 2151 at arch/x86/mm/ioremap.c:217 __ioremap_caller+0x2cd/0x340<br /> <br /> Further debugging reveals that this occurs when the requests for<br /> S2D_PHYS_ADDR_LOW and S2D_PHYS_ADDR_HIGH return a value of 0,<br /> indicating that the STB is inaccessible. To prevent the ioremap<br /> warning and provide clarity to the user, handle the invalid address<br /> and display an error message.