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ubuntucveUbuntu.comUB:CVE-2024-41008
HistoryJul 16, 2024 - 12:00 a.m.

CVE-2024-41008

2024-07-1600:00:00
ubuntu.com
ubuntu.com
1
linux kernel
drm
amdgpu
task_info
vulnerability
lifecycle management

AI Score

7

Confidence

High

In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: change vm->task_info handling
This patch changes the handling and lifecycle of vm->task_info object.
The major changes are:

  • vm->task_info is a dynamically allocated ptr now, and its uasge is
    reference counted.
  • introducing two new helper funcs for task_info lifecycle management
    • amdgpu_vm_get_task_info: reference counts up task_info before
      returning this info
    • amdgpu_vm_put_task_info: reference counts down task_info
  • last put to task_info() frees task_info from the vm.
    This patch also does logistical changes required for existing usage
    of vm->task_info.
    V2: Do not block all the prints when task_info not found (Felix)
    V3: Fixed review comments from Felix
    • Fix wrong indentation
    • No debug message for -ENOMEM
    • Add NULL check for task_info
    • Do not duplicate the debug messages (ti vs no ti)
    • Get first reference of task_info in vm_init(), put last
      in vm_fini()
      V4: Fixed review comments from Felix
    • fix double reference increment in create_task_info
    • change amdgpu_vm_get_task_info_pasid
    • additional changes in amdgpu_gem.c while porting

AI Score

7

Confidence

High