Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Use dynamic allocation for CU occupancy array in 'kfd_get_cu_occupancy()' The `kfd_get_cu_occupancy` function previously declared a large `cu_occupancy` array as a local variable, which could lead to stack overflows due to excessive stack usage. This commit replaces the static array allocation with dynamic memory allocation using `kcalloc`, thereby reducing the stack size. This change avoids the risk of stack overflows in kernel space, in scenarios where `AMDGPU_MAX_QUEUES` is large. The allocated memory is freed using `kfree` before the function returns to prevent memory leaks. Fixes the below with gcc W=1: drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c: In function ‘kfd_get_cu_occupancy’: drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:322:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=] 322 | } | ^
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6ae9e1aba97e4cdaa31a0bfdc07497ad0e915c84 before 6d9f07196389f35a3afebcf1a12c1425725caddd; affected 6ae9e1aba97e4cdaa31a0bfdc07497ad0e915c84 before 922f0e00017b09d9d47e3efac008c8b20ed546a0 |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; unaffected 6.12.2 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6d9f07196389f35a3afebcf1a12c1425725caddd
- https://git.kernel.org/stable/c/922f0e00017b09d9d47e3efac008c8b20ed546a0
ADP enrichment
No English description supplied.
No references supplied.