CVE-2024-56652

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/xe/reg_sr: Remove register pool<br /> <br /> That pool implementation doesn&amp;#39;t really work: if the krealloc happens to<br /> move the memory and return another address, the entries in the xarray<br /> become invalid, leading to use-after-free later:<br /> <br /> BUG: KASAN: slab-use-after-free in xe_reg_sr_apply_mmio+0x570/0x760 [xe]<br /> Read of size 4 at addr ffff8881244b2590 by task modprobe/2753<br /> <br /> Allocated by task 2753:<br /> kasan_save_stack+0x39/0x70<br /> kasan_save_track+0x14/0x40<br /> kasan_save_alloc_info+0x37/0x60<br /> __kasan_kmalloc+0xc3/0xd0<br /> __kmalloc_node_track_caller_noprof+0x200/0x6d0<br /> krealloc_noprof+0x229/0x380<br /> <br /> Simplify the code to fix the bug. A better pooling strategy may be added<br /> back later if needed.<br /> <br /> (cherry picked from commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)