Answer in brief
CVE-2021-47142 records a High severity (CVSS 7.8) vulnerability in drm/amdgpu: Fix a use-after-free. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2021-47142 records a High severity (CVSS 7.8) vulnerability in drm/amdgpu: Fix a use-after-free. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <0707c3fea8102d211631ba515ef2159707561b0d || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <3293cf3513d69f00c14d43e2020826d45ea0e46a || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <952ab3f9f48eb0e8050596d41951cf516be6b122 || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <a849e218556f932576c0fb1c5a88714b61709a17 || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <7398c2aab4da960761ec182d04d6d5abbb4a226e || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <f98cdf084405333ee2f5be548a91b2d168e49276 || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <d4ea141fd4b40636a8326df5a377d9c5cf9b3faa || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <1e5c37385097c35911b0f8a0c67ffd10ee1af9a2 | 0707c3fea8102d211631ba515ef2159707561b0d, 3293cf3513d69f00c14d43e2020826d45ea0e46a, 952ab3f9f48eb0e8050596d41951cf516be6b122, a849e218556f932576c0fb1c5a88714b61709a17, 7398c2aab4da960761ec182d04d6d5abbb4a226e, f98cdf084405333ee2f5be548a91b2d168e49276, d4ea141fd4b40636a8326df5a377d9c5cf9b3faa, 1e5c37385097c35911b0f8a0c67ffd10ee1af9a2 |
| Linux/Linuxgeneric | 4.2 | Not reported |
Published upstream
Mar 25, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix a use-after-free looks like we forget to set ttm->sg to NULL. Hit panic below [ 1235.844104] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b7b4b: 0000 [#1] SMP DEBUG_PAGEALLOC NOPTI [ 1235.989074] Call Trace: [ 1235.991751] sg_free_table+0x17/0x20 [ 1235.995667] amdgpu_ttm_backend_unbind.cold+0x4d/0xf7 [amdgpu] [ 1236.002288] amdgpu_ttm_backend_destroy+0x29/0x130 [amdgpu] [ 1236.008464] ttm_tt_destroy+0x1e/0x30 [ttm] [ 1236.013066] ttm_bo_cleanup_memtype_use+0x51/0xa0 [ttm] [ 1236.018783] ttm_bo_release+0x262/0xa50 [ttm] [ 1236.023547] ttm_bo_put+0x82/0xd0 [ttm] [ 1236.027766] amdgpu_bo_unref+0x26/0x50 [amdgpu] [ 1236.032809] amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu+0x7aa/0xd90 [amdgpu] [ 1236.040400] kfd_ioctl_alloc_memory_of_gpu+0xe2/0x330 [amdgpu] [ 1236.046912] kfd_ioctl+0x463/0x690 [amdgpu]
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <0707c3fea8102d211631ba515ef2159707561b0d || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <3293cf3513d69f00c14d43e2020826d45ea0e46a || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <952ab3f9f48eb0e8050596d41951cf516be6b122 || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <a849e218556f932576c0fb1c5a88714b61709a17 || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <7398c2aab4da960761ec182d04d6d5abbb4a226e || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <f98cdf084405333ee2f5be548a91b2d168e49276 || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <d4ea141fd4b40636a8326df5a377d9c5cf9b3faa || >=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <1e5c37385097c35911b0f8a0c67ffd10ee1af9a2 | 0707c3fea8102d211631ba515ef2159707561b0d, 3293cf3513d69f00c14d43e2020826d45ea0e46a, 952ab3f9f48eb0e8050596d41951cf516be6b122, a849e218556f932576c0fb1c5a88714b61709a17, 7398c2aab4da960761ec182d04d6d5abbb4a226e, f98cdf084405333ee2f5be548a91b2d168e49276, d4ea141fd4b40636a8326df5a377d9c5cf9b3faa, 1e5c37385097c35911b0f8a0c67ffd10ee1af9a2 |
| Linux/Linuxgeneric | 4.2 | Not reported |
Published upstream
Mar 25, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix a use-after-free looks like we forget to set ttm->sg to NULL. Hit panic below [ 1235.844104] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b7b4b: 0000 [#1] SMP DEBUG_PAGEALLOC NOPTI [ 1235.989074] Call Trace: [ 1235.991751] sg_free_table+0x17/0x20 [ 1235.995667] amdgpu_ttm_backend_unbind.cold+0x4d/0xf7 [amdgpu] [ 1236.002288] amdgpu_ttm_backend_destroy+0x29/0x130 [amdgpu] [ 1236.008464] ttm_tt_destroy+0x1e/0x30 [ttm] [ 1236.013066] ttm_bo_cleanup_memtype_use+0x51/0xa0 [ttm] [ 1236.018783] ttm_bo_release+0x262/0xa50 [ttm] [ 1236.023547] ttm_bo_put+0x82/0xd0 [ttm] [ 1236.027766] amdgpu_bo_unref+0x26/0x50 [amdgpu] [ 1236.032809] amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu+0x7aa/0xd90 [amdgpu] [ 1236.040400] kfd_ioctl_alloc_memory_of_gpu+0xe2/0x330 [amdgpu] [ 1236.046912] kfd_ioctl+0x463/0x690 [amdgpu]
Quoted source text, attributed separately from HOL analysis.