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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database

Vulnerability Change Records for CVE-2024-56652

Change History

New CVE Received from kernel.org 12/27/2024 10:15:25 AM

Action Type Old Value New Value
Added Description 

								
							
							
								
							
						
								
							
								
In the Linux kernel, the following vulnerability has been resolved:

drm/xe/reg_sr: Remove register pool

That pool implementation doesn't really work: if the krealloc happens to
move the memory and return another address, the entries in the xarray
become invalid, leading to use-after-free later:

	BUG: KASAN: slab-use-after-free in xe_reg_sr_apply_mmio+0x570/0x760 [xe]
	Read of size 4 at addr ffff8881244b2590 by task modprobe/2753

	Allocated by task 2753:
	 kasan_save_stack+0x39/0x70
	 kasan_save_track+0x14/0x40
	 kasan_save_alloc_info+0x37/0x60
	 __kasan_kmalloc+0xc3/0xd0
	 __kmalloc_node_track_caller_noprof+0x200/0x6d0
	 krealloc_noprof+0x229/0x380

Simplify the code to fix the bug. A better pooling strategy may be added
back later if needed.

(cherry picked from commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)

								
								
					

					

						Added
						Reference
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
https://git.kernel.org/stable/c/b0193a31a0ca5a0f9e60bb4a86537d46b98111b8

								
								
					

					

						Added
						Reference
						
							
							
								
							
								

								
							
							
								
							
						
								
							
								
https://git.kernel.org/stable/c/d7b028656c29b22fcde1c6ee1df5b28fbba987b5