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Ubuntu: (CVE-2021-47142): linux vulnerability

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Ubuntu: (CVE-2021-47142): linux vulnerability

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
03/25/2024
Created
11/21/2024
Added
11/19/2024
Modified
02/11/2025

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]

Solution(s)

  • ubuntu-upgrade-linux
  • ubuntu-upgrade-linux-aws
  • ubuntu-upgrade-linux-aws-5-4
  • ubuntu-upgrade-linux-aws-fips
  • ubuntu-upgrade-linux-aws-hwe
  • ubuntu-upgrade-linux-azure
  • ubuntu-upgrade-linux-azure-4-15
  • ubuntu-upgrade-linux-azure-5-4
  • ubuntu-upgrade-linux-azure-fips
  • ubuntu-upgrade-linux-bluefield
  • ubuntu-upgrade-linux-fips
  • ubuntu-upgrade-linux-gcp
  • ubuntu-upgrade-linux-gcp-4-15
  • ubuntu-upgrade-linux-gcp-5-4
  • ubuntu-upgrade-linux-gcp-fips
  • ubuntu-upgrade-linux-gkeop
  • ubuntu-upgrade-linux-hwe
  • ubuntu-upgrade-linux-hwe-5-4
  • ubuntu-upgrade-linux-kvm
  • ubuntu-upgrade-linux-oracle
  • ubuntu-upgrade-linux-oracle-5-4
  • ubuntu-upgrade-linux-raspi
  • ubuntu-upgrade-linux-raspi-5-4

References

  • https://attackerkb.com/topics/cve-2021-47142
  • CVE - 2021-47142
  • https://git.kernel.org/stable/c/0707c3fea8102d211631ba515ef2159707561b0d
  • https://git.kernel.org/stable/c/1e5c37385097c35911b0f8a0c67ffd10ee1af9a2
  • https://git.kernel.org/stable/c/3293cf3513d69f00c14d43e2020826d45ea0e46a
  • https://git.kernel.org/stable/c/7398c2aab4da960761ec182d04d6d5abbb4a226e
  • https://git.kernel.org/stable/c/952ab3f9f48eb0e8050596d41951cf516be6b122
  • https://git.kernel.org/stable/c/a849e218556f932576c0fb1c5a88714b61709a17
  • https://git.kernel.org/stable/c/d4ea141fd4b40636a8326df5a377d9c5cf9b3faa
  • https://git.kernel.org/stable/c/f98cdf084405333ee2f5be548a91b2d168e49276
  • https://www.cve.org/CVERecord?id=CVE-2021-47142
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