CVE-2021-47142: drm/amdgpu: Fix a use-after-free

Published Mar 25, 2024
·
Updated

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 DEBUGPAGEALLOC NOPTI [ 1235.989074] Call Trace: [ 1235.991751] sgfreetable+0x17/0x20 [ 1235.995667] amdgputtmbackendunbind.cold+0x4d/0xf7 [amdgpu] [ 1236.002288] amdgputtmbackenddestroy+0x29/0x130 [amdgpu] [ 1236.008464] ttmttdestroy+0x1e/0x30 [ttm] [ 1236.013066] ttmbocleanupmemtypeuse+0x51/0xa0 [ttm] [ 1236.018783] ttmborelease+0x262/0xa50 [ttm] [ 1236.023547] ttmboput+0x82/0xd0 [ttm] [ 1236.027766] amdgpubounref+0x26/0x50 [amdgpu] [ 1236.032809] amdgpuamdkfdgpuvmallocmemoryofgpu+0x7aa/0xd90 [amdgpu] [ 1236.040400] kfdioctlallocmemoryofgpu+0xe2/0x330 [amdgpu] [ 1236.046912] kfdioctl+0x463/0x690 [amdgpu]

Affected Software

126 affected componentsFixes available
Linux Linux kernel<4.4.271
Linux Linux kernel>=4.9.0<4.9.271
Linux Linux kernel>=4.14.0<4.14.235
Linux Linux kernel>=4.19.0<4.19.193
Linux Linux kernel>=5.4.0<5.4.124
Linux Linux kernel>=5.10.0<5.10.42
Linux Linux kernel>=5.12.0<5.12.9
Linux Linux kernel=5.13-rc1
Linux Linux kernel=5.13-rc2
ubuntu/linux-azure<4.15.0-1121.134~14.04.1
4.15.0-1121.134~14.04.1
ubuntu/linux-aws<4.4.0-1153.159
4.4.0-1153.159
ubuntu/linux-lts-xenial<4.4.0-279.313~14.04.1
4.4.0-279.313~14.04.1
ubuntu/linux<4.4.0-279.313
4.4.0-279.313
ubuntu/linux-aws<4.4.0-1191.206
4.4.0-1191.206
ubuntu/linux-aws-hwe<4.15.0-1109.116~16.04.1
4.15.0-1109.116~16.04.1
ubuntu/linux-azure<4.15.0-1121.134~16.04.1
4.15.0-1121.134~16.04.1
ubuntu/linux-gcp<4.15.0-1106.120~16.04.1
4.15.0-1106.120~16.04.1
ubuntu/linux-hwe<4.15.0-151.157~16.04.1
4.15.0-151.157~16.04.1
ubuntu/linux-kvm<4.4.0-1154.165
4.4.0-1154.165
ubuntu/linux-oracle<4.15.0-1078.86~16.04.1
4.15.0-1078.86~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1123.130
4.4.0-1123.130
ubuntu/linux-fips*
ubuntu/linux<4.15.0-151.157
4.15.0-151.157
ubuntu/linux-aws<4.15.0-1109.116
4.15.0-1109.116
ubuntu/linux-aws-5.4<5.4.0-1054.57~18.04.1
5.4.0-1054.57~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1121.134
4.15.0-1121.134
ubuntu/linux-azure-5.4<5.4.0-1055.57~18.04.1
5.4.0-1055.57~18.04.1
ubuntu/linux-gcp-4.15<4.15.0-1106.120
4.15.0-1106.120
ubuntu/linux-gcp-5.4<5.4.0-1049.53~18.04.1
5.4.0-1049.53~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-80.90~18.04.1
5.4.0-80.90~18.04.1
ubuntu/linux-kvm<4.15.0-1097.99
4.15.0-1097.99
ubuntu/linux-oracle<4.15.0-1078.86
4.15.0-1078.86
ubuntu/linux-oracle-5.4<5.4.0-1052.56~18.04.1
5.4.0-1052.56~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1041.45~18.04.1
5.4.0-1041.45~18.04.1
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-fips<4.15.0-2051.53
4.15.0-2051.53
ubuntu/linux-azure-fips<4.15.0-2033.37
4.15.0-2033.37
ubuntu/linux-fips<4.15.0-1066.75
4.15.0-1066.75
ubuntu/linux-gcp-fips<4.15.0-2016.18
4.15.0-2016.18
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-80.90
5.4.0-80.90
ubuntu/linux-aws<5.4.0-1054.57
5.4.0-1054.57
ubuntu/linux-azure<5.4.0-1055.57
5.4.0-1055.57
ubuntu/linux-bluefield<5.4.0-1016.19
5.4.0-1016.19
ubuntu/linux-gcp<5.4.0-1049.53
5.4.0-1049.53
ubuntu/linux-gkeop<5.4.0-1021.22
5.4.0-1021.22
ubuntu/linux-kvm<5.4.0-1044.46
5.4.0-1044.46
ubuntu/linux-oracle<5.4.0-1052.56
5.4.0-1052.56
ubuntu/linux-raspi<5.4.0-1041.45
5.4.0-1041.45
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux-aws-fips<5.4.0-1069.73+fips2
5.4.0-1069.73+fips2
ubuntu/linux-azure-fips<5.4.0-1073.76+fips1
5.4.0-1073.76+fips1
ubuntu/linux-fips<5.4.0-1031.36
5.4.0-1031.36
ubuntu/linux-gcp-fips<5.4.0-1067.71~20.04.1
5.4.0-1067.71~20.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-nvidia-6.2*
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1121.134~14.04.1
  2. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1153.159
  3. Upgrade

    Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.

    Fixed in 4.4.0-279.313~14.04.1
  4. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.4.0-279.313
  5. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1191.206
  6. Upgrade

    Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-1109.116~16.04.1
  7. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1121.134~16.04.1
  8. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1106.120~16.04.1
  9. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-151.157~16.04.1
  10. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.4.0-1154.165
  11. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1078.86~16.04.1
  12. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.4.0-1123.130
  13. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.15.0-151.157
  14. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1109.116
  15. Upgrade

    Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1054.57~18.04.1
  16. Upgrade

    Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1121.134
  17. Upgrade

    Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1055.57~18.04.1
  18. Upgrade

    Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1106.120
  19. Upgrade

    Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1049.53~18.04.1
  20. Upgrade

    Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-80.90~18.04.1
  21. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0-1097.99
  22. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1078.86
  23. Upgrade

    Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1052.56~18.04.1
  24. Upgrade

    Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1041.45~18.04.1
  25. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2051.53
  26. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2033.37
  27. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-1066.75
  28. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2016.18
  29. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.4.0-80.90
  30. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1054.57
  31. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1055.57
  32. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.4.0-1016.19
  33. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1049.53
  34. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 5.4.0-1021.22
  35. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1044.46
  36. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1052.56
  37. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.4.0-1041.45
  38. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1069.73+fips2
  39. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1073.76+fips1
  40. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1031.36
  41. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1067.71~20.04.1

Event History

Mar 25, 2024
CVE Published
via MITRE·09:07 AM
Data Sourced
via MITRE·09:07 AM
DescriptionSeverity
Data Sourced
via OSV·09:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·09:15 AM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-47142?

CVE-2021-47142 has a high severity due to its potential to cause a use-after-free vulnerability in the Linux kernel.

2

How do I fix CVE-2021-47142?

To fix CVE-2021-47142, update the Linux kernel to a version that is not affected by this vulnerability.

3

Which versions of Linux are affected by CVE-2021-47142?

CVE-2021-47142 affects multiple versions of the Linux kernel, particularly those between 4.4.x and 5.13-rc2.

4

What impact does CVE-2021-47142 have on systems?

The use-after-free vulnerability in CVE-2021-47142 can lead to system crashes or arbitrary code execution on affected systems.

5

Is CVE-2021-47142 already patched?

Yes, CVE-2021-47142 has been addressed in later releases of the Linux kernel, so ensure you are on a patched version.

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