CVE-2024-53145 um: Fix potential integer overflow during physmem setup

In the Linux kernel, the following vulnerability has been resolved: um: Fix potential integer overflow during physmem setup This issue happens when the real map size is greater than LONGMAX, which can be easily triggered on UML/i386...

CVE-2024-53145

CVE-2024-53145 – Linux kernel integer overflow in physmem setup : The vulnerability occurs when the real map size is greater than LONG_MAX, which can be triggered on UML/i386, leading to an overflow during physical memory (physmem) setup. The connected Astra Linux security bulletin mirrors the Li...