github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-27 17:47:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger

Browse Source 
get_queue_ids() computes array_size = num_queues * sizeof(uint32_t),
which could overflow on 32-bit size_t build. using array_size()
instead, it saturates to SIZE_MAX on overflow.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2026-05-12 10:19:52 -04:00 committed by Alex Deucher
parent eb53125a7a
commit 2d57a0475f
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
View File

@ -3477,12 +3477,14 @@ static void copy_context_work_handler(struct work_struct *work)
static uint32_t *get_queue_ids(uint32_t num_queues, uint32_t *usr_queue_id_array)
{
size_t array_size = num_queues * sizeof(uint32_t);
if (!usr_queue_id_array)
return NULL;
return memdup_user(usr_queue_id_array, array_size);
if (num_queues > KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
return ERR_PTR(-EINVAL);
return memdup_user(usr_queue_id_array,
array_size(num_queues, sizeof(uint32_t)));
}
int resume_queues(struct kfd_process *p,