CVE-2021-47184: i40e: Fix NULL ptr dereference on VSI filter sync

Published Apr 10, 2024
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

i40e: Fix NULL ptr dereference on VSI filter sync

Remove the reason of null pointer dereference in sync VSI filters. Added new I40EVSIRELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.

Affected Software

126 affected componentsFixes available
Linux Linux kernel>=3.12<4.14.256
Linux Linux kernel>=4.15<4.19.218
Linux Linux kernel>=4.20<5.4.162
Linux Linux kernel>=5.5<5.10.82
Linux Linux kernel>=5.11<5.15.5
Linux Linux kernel=5.16-rc1
ubuntu/linux-azure<4.15.0-1130.143~14.04.1
4.15.0-1130.143~14.04.1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-lts-xenial*
ubuntu/linux-aws-hwe<4.15.0-1119.126~16.04.2
4.15.0-1119.126~16.04.2
ubuntu/linux-azure<4.15.0-1130.143~16.04.1
4.15.0-1130.143~16.04.1
ubuntu/linux-gcp<4.15.0-1115.129~16.04.1
4.15.0-1115.129~16.04.1
ubuntu/linux-hwe<4.15.0-167.175~16.04.1
4.15.0-167.175~16.04.1
ubuntu/linux-oracle<4.15.0-1086.94~16.04.1
4.15.0-1086.94~16.04.1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-hwe-edge*
ubuntu/linux-kvm*
ubuntu/linux-fips*
ubuntu/linux-fips*
ubuntu/linux<4.15.0-167.175
4.15.0-167.175
ubuntu/linux-aws<4.15.0-1119.127
4.15.0-1119.127
ubuntu/linux-aws-5.4<5.4.0-1064.67~18.04.1
5.4.0-1064.67~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1131.144
4.15.0-1131.144
ubuntu/linux-azure-5.4<5.4.0-1068.71~18.04.1
5.4.0-1068.71~18.04.1
ubuntu/linux-gcp-4.15<4.15.0-1115.129
4.15.0-1115.129
ubuntu/linux-gcp-5.4<5.4.0-1063.67~18.04.1
5.4.0-1063.67~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-97.110~18.04.1
5.4.0-97.110~18.04.1
ubuntu/linux-ibm-5.4<5.4.0-1014.15~18.04.1
5.4.0-1014.15~18.04.1
ubuntu/linux-kvm<4.15.0-1106.108
4.15.0-1106.108
ubuntu/linux-oracle<4.15.0-1086.94
4.15.0-1086.94
ubuntu/linux-oracle-5.4<5.4.0-1062.66~18.04.1
5.4.0-1062.66~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1052.58~18.04.1
5.4.0-1052.58~18.04.1
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<4.15.0-2060.62
4.15.0-2060.62
ubuntu/linux-azure-fips<4.15.0-2042.46
4.15.0-2042.46
ubuntu/linux-fips<4.15.0-1076.85
4.15.0-1076.85
ubuntu/linux-gcp-fips<4.15.0-2025.27
4.15.0-2025.27
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-97.110
5.4.0-97.110
ubuntu/linux-aws<5.4.0-1064.67
5.4.0-1064.67
ubuntu/linux-azure<5.4.0-1068.71
5.4.0-1068.71
ubuntu/linux-bluefield<5.4.0-1026.29
5.4.0-1026.29
ubuntu/linux-gcp<5.4.0-1063.67
5.4.0-1063.67
ubuntu/linux-gkeop<5.4.0-1032.33
5.4.0-1032.33
ubuntu/linux-ibm<5.4.0-1013.14
5.4.0-1013.14
ubuntu/linux-kvm<5.4.0-1054.56
5.4.0-1054.56
ubuntu/linux-oracle<5.4.0-1062.66
5.4.0-1062.66
ubuntu/linux-raspi<5.4.0-1052.58
5.4.0-1052.58
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<5.4.0-1041.47
5.4.0-1041.47
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 4.15.0-1130.143~14.04.1
  2. Upgrade

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

    Fixed in 4.15.0-1119.126~16.04.2
  3. Upgrade

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

    Fixed in 4.15.0-1130.143~16.04.1
  4. Upgrade

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

    Fixed in 4.15.0-1115.129~16.04.1
  5. Upgrade

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

    Fixed in 4.15.0-167.175~16.04.1
  6. Upgrade

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

    Fixed in 4.15.0-1086.94~16.04.1
  7. Upgrade

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

    Fixed in 4.15.0-167.175
  8. Upgrade

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

    Fixed in 4.15.0-1119.127
  9. Upgrade

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

    Fixed in 5.4.0-1064.67~18.04.1
  10. Upgrade

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

    Fixed in 4.15.0-1131.144
  11. Upgrade

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

    Fixed in 5.4.0-1068.71~18.04.1
  12. Upgrade

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

    Fixed in 4.15.0-1115.129
  13. Upgrade

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

    Fixed in 5.4.0-1063.67~18.04.1
  14. Upgrade

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

    Fixed in 5.4.0-97.110~18.04.1
  15. Upgrade

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

    Fixed in 5.4.0-1014.15~18.04.1
  16. Upgrade

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

    Fixed in 4.15.0-1106.108
  17. Upgrade

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

    Fixed in 4.15.0-1086.94
  18. Upgrade

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

    Fixed in 5.4.0-1062.66~18.04.1
  19. Upgrade

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

    Fixed in 5.4.0-1052.58~18.04.1
  20. Upgrade

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

    Fixed in 4.15.0-2060.62
  21. Upgrade

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

    Fixed in 4.15.0-2042.46
  22. Upgrade

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

    Fixed in 4.15.0-1076.85
  23. Upgrade

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

    Fixed in 4.15.0-2025.27
  24. Upgrade

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

    Fixed in 5.4.0-97.110
  25. Upgrade

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

    Fixed in 5.4.0-1064.67
  26. Upgrade

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

    Fixed in 5.4.0-1068.71
  27. Upgrade

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

    Fixed in 5.4.0-1026.29
  28. Upgrade

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

    Fixed in 5.4.0-1063.67
  29. Upgrade

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

    Fixed in 5.4.0-1032.33
  30. Upgrade

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

    Fixed in 5.4.0-1013.14
  31. Upgrade

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

    Fixed in 5.4.0-1054.56
  32. Upgrade

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

    Fixed in 5.4.0-1062.66
  33. Upgrade

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

    Fixed in 5.4.0-1052.58
  34. Upgrade

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

    Fixed in 5.4.0-1069.73+fips2
  35. Upgrade

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

    Fixed in 5.4.0-1073.76+fips1
  36. Upgrade

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

    Fixed in 5.4.0-1041.47
  37. 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

Apr 10, 2024
CVE Published
via MITRE·06:56 PM
Data Sourced
via MITRE·06:56 PM
DescriptionSeverity
Data Sourced
via OSV·07:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·07:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-47184?

CVE-2021-47184 is classified as a medium severity vulnerability affecting the Linux kernel.

2

How do I fix CVE-2021-47184?

To fix CVE-2021-47184, update the Linux kernel to a patched version that addresses the null pointer dereference.

3

What versions of the Linux kernel are affected by CVE-2021-47184?

CVE-2021-47184 affects multiple Linux kernel versions ranging from 3.12 up to 5.16-rc1.

4

What impact does CVE-2021-47184 have on system security?

CVE-2021-47184 can lead to a denial of service condition due to null pointer dereferences in the i40e driver.

5

Is CVE-2021-47184 exploitable remotely?

CVE-2021-47184 is not considered easily exploitable remotely but can impact systems with specific configurations.

Company

Resources

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