Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Skip KFD mapping clear before initialization amdgpu_amdkfd_clear_kfd_mapping() assumes that a non-NULL kfd_dev has a fully populated node array. This is not true when KFD device initialization fails after probe. For example, kgd2kfd_device_init() sets num_nodes before checking PCIe atomics support. On Polaris systems without the required atomics, it returns before allocating nodes[0], but the kfd_dev remains attached to the amdgpu device. A later GPU reset then dereferences nodes[0]->id. Require the authoritative KFD initialization flag before walking the node array, matching the existing KFD reset and teardown paths. (cherry picked from commit 4ac1835823c47903fbb278bbf474773c46f59edc)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 70cadefcc6160c575b04f763ada34c20e868d577 before 157d3f1db7e7e6f320daa221fae84a4c13555b6f; affected 70cadefcc6160c575b04f763ada34c20e868d577 before 7f9caa70aef0950e06d395ca0035831214d88187 |
| Linux / Linux | affected 7.2; unaffected 0 before 7.2; unaffected 7.2.8 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.