Description (CNA)
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)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected dd08ebf6c3525a7ea2186e636df064ea47281987 before b0193a31a0ca5a0f9e60bb4a86537d46b98111b8; affected dd08ebf6c3525a7ea2186e636df064ea47281987 before d7b028656c29b22fcde1c6ee1df5b28fbba987b5 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.12.6 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b0193a31a0ca5a0f9e60bb4a86537d46b98111b8
- https://git.kernel.org/stable/c/d7b028656c29b22fcde1c6ee1df5b28fbba987b5
ADP enrichment
No English description supplied.
No references supplied.