Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()' Fixes the below: drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() warn: variable dereferenced before check 'mca_funcs' (see line 368) 357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev, enum amdgpu_mca_error_type type, 358 int idx, struct mca_bank_entry *entry) 359 { 360 const struct amdgpu_mca_smu_funcs *mca_funcs = adev->mca.mca_funcs; 361 int count; 362 363 switch (type) { 364 case AMDGPU_MCA_ERROR_TYPE_UE: 365 count = mca_funcs->max_ue_count; mca_funcs is dereferenced here. 366 break; 367 case AMDGPU_MCA_ERROR_TYPE_CE: 368 count = mca_funcs->max_ce_count; mca_funcs is dereferenced here. 369 break; 370 default: 371 return -EINVAL; 372 } 373 374 if (idx >= count) 375 return -EINVAL; 376 377 if (mca_funcs && mca_funcs->mca_get_mca_entry) ^^^^^^^^^ Checked too late!
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 7b5d58c07024516c0e81b95e98f37710cf402c53; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 4f32504a2f85a7b40fe149436881381f48e9c0c0 |
| Linux / Linux | affected 4.2; unaffected 0 before 4.2; unaffected 6.7.4 through 6.7.*; unaffected 6.8 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7b5d58c07024516c0e81b95e98f37710cf402c53
- https://git.kernel.org/stable/c/4f32504a2f85a7b40fe149436881381f48e9c0c0
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.