1.4 KiB
CVE-2024-56695
Description
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 largecu_occupancy array as a local variable, which could lead to stackoverflows due to excessive stack usage. This commit replaces the staticarray allocation with dynamic memory allocation using kcalloc,thereby reducing the stack size.This change avoids the risk of stack overflows in kernel space, inscenarios where AMDGPU_MAX_QUEUES is large. The allocated memory isfreed using kfree before the function returns to prevent memoryleaks.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 | } | ^
POC
Reference
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