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]

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00012.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < 0707c3fea8102d211631ba515ef2159707561b0d
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < 3293cf3513d69f00c14d43e2020826d45ea0e46a
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < 952ab3f9f48eb0e8050596d41951cf516be6b122
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < a849e218556f932576c0fb1c5a88714b61709a17
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < 7398c2aab4da960761ec182d04d6d5abbb4a226e
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < f98cdf084405333ee2f5be548a91b2d168e49276
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < d4ea141fd4b40636a8326df5a377d9c5cf9b3faa
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 affected < 1e5c37385097c35911b0f8a0c67ffd10ee1af9a2
Linux Linux affected
Version Status Constraints
4.2 affected —
0 unaffected < 4.2
4.4.271 unaffected ≤ 4.4.*
4.9.271 unaffected ≤ 4.9.*
4.14.235 unaffected ≤ 4.14.*
4.19.193 unaffected ≤ 4.19.*
5.4.124 unaffected ≤ 5.4.*
5.10.42 unaffected ≤ 5.10.*
5.12.9 unaffected ≤ 5.12.*
5.13 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0707c3fea8102d211631ba515ef2159707561b0d cve-icon cve-icon
https://git.kernel.org/stable/c/1e5c37385097c35911b0f8a0c67ffd10ee1af9a2 cve-icon cve-icon
https://git.kernel.org/stable/c/3293cf3513d69f00c14d43e2020826d45ea0e46a cve-icon cve-icon
https://git.kernel.org/stable/c/7398c2aab4da960761ec182d04d6d5abbb4a226e cve-icon cve-icon
https://git.kernel.org/stable/c/952ab3f9f48eb0e8050596d41951cf516be6b122 cve-icon cve-icon
https://git.kernel.org/stable/c/a849e218556f932576c0fb1c5a88714b61709a17 cve-icon cve-icon
https://git.kernel.org/stable/c/d4ea141fd4b40636a8326df5a377d9c5cf9b3faa cve-icon cve-icon
https://git.kernel.org/stable/c/f98cdf084405333ee2f5be548a91b2d168e49276 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024032558-CVE-2021-47142-9319@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-47142 cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-47142 cve-icon
History

Mon, 05 May 2025 08:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 17 Dec 2024 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Wed, 11 Sep 2024 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-09-16T08:01:53.491Z

Reserved: 2024-03-04T18:12:48.842Z

Link: CVE-2021-47142

cve-icon Vulnrichment

Updated: 2024-08-04T05:24:39.924Z

cve-icon NVD

Status : Analyzed

Published: 2024-03-25T09:15:08.843

Modified: 2024-12-17T14:56:12.967

Link: CVE-2021-47142

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-03-25T00:00:00Z

Links: CVE-2021-47142 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses