CVE-2021-47142
drm/amdgpu: Fix a use-after-free
At a glance
- Source
- NVD
- EPSS
- EPSS 0.24 % · percentile 15 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
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]
Weaknesses (CWE)
- CWE-416 — Use After Free
References
- https://git.kernel.org/stable/c/0707c3fea8102d211631ba515ef2159707561b0d
- https://git.kernel.org/stable/c/3293cf3513d69f00c14d43e2020826d45ea0e46a
- https://git.kernel.org/stable/c/952ab3f9f48eb0e8050596d41951cf516be6b122
- https://git.kernel.org/stable/c/a849e218556f932576c0fb1c5a88714b61709a17
- https://git.kernel.org/stable/c/7398c2aab4da960761ec182d04d6d5abbb4a226e
- https://git.kernel.org/stable/c/f98cdf084405333ee2f5be548a91b2d168e49276
- https://git.kernel.org/stable/c/d4ea141fd4b40636a8326df5a377d9c5cf9b3faa
- https://git.kernel.org/stable/c/1e5c37385097c35911b0f8a0c67ffd10ee1af9a2
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-33790
- GCVE · GCVE-0-2021-47142
CERT-FR advisories
- CERTFR-2026-AVI-0397 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0458 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0440 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0420 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0363 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*< 4.4.271cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.9.0 < 4.9.271cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.14.0 < 4.14.235cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19.0 < 4.19.193cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.4.0 < 5.4.124cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.10.0 < 5.10.42cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.12.0 < 5.12.9cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 0707c3fea8102d211631ba515ef2159707561b0d ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 3293cf3513d69f00c14d43e2020826d45ea0e46a ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 952ab3f9f48eb0e8050596d41951cf516be6b122 ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < a849e218556f932576c0fb1c5a88714b61709a17 ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 7398c2aab4da960761ec182d04d6d5abbb4a226e ; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < f98cdf084405333ee2f5be548a91b2d168e49276 |
| Linux · Linux | affected 4.2 ; unaffected 0 < 4.2 ; unaffected 4.4.271 ≤ 4.4.* ; unaffected 4.9.271 ≤ 4.9.* ; unaffected 4.14.235 ≤ 4.14.* ; unaffected 4.19.193 ≤ 4.19.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |