CVE-2024-56695 - AMDGPU Stack Overflow Vulnerability

CVE-2024-56695 - AMDGPU Stack Overflow Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Sat, 12/28/2024 - 12:21
CVE ID : CVE-2024-56695
Published : Dec. 28, 2024, 10:15 a.m. | 1 hour, 6 minutes ago
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 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 | } | ^
Severity: 0.0 | NA
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