CVE-2021-47142
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
drm/amdgpu: Fix a use-after-free
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]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | 0707c3fea8102d211631ba515ef2159707561b0d | Unavailable | None listed |
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | 3293cf3513d69f00c14d43e2020826d45ea0e46a | Unavailable | None listed |
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | 952ab3f9f48eb0e8050596d41951cf516be6b122 | Unavailable | None listed |
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | a849e218556f932576c0fb1c5a88714b61709a17 | Unavailable | None listed |
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | 7398c2aab4da960761ec182d04d6d5abbb4a226e | Unavailable | None listed |
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | f98cdf084405333ee2f5be548a91b2d168e49276 | Unavailable | None listed |
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | d4ea141fd4b40636a8326df5a377d9c5cf9b3faa | Unavailable | None listed |
| d38ceaf99ed015f2a0b9af3499791bd3a3daae21 | affected | git | 1e5c37385097c35911b0f8a0c67ffd10ee1af9a2 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.2 | Unavailable | None listed |
| 4.4.271 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.271 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.235 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.193 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.124 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.42 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.12.9 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |