CVE-2021-28964: Race Condition

Published Mar 22, 2021
·
Updated

A race condition was discovered in getoldroot in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.

Affected Software

95 affected componentsFixes available
Linux Linux kernel<=5.11.8
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Debian Debian Linux=9.0
NetApp Cloud Backup
NetApp Solidfire Baseboard Management Controller Firmware
All of the following
NetApp Aff A250 Firmware
NetApp Aff A250
All of the following
NetApp Fas 500f Firmware
NetApp Fas 500f
NetApp Aff A250 Firmware
NetApp Aff A250
NetApp Fas 500f Firmware
NetApp Fas 500f
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-1
ubuntu/linux-aws<4.4.0-1103.108
4.4.0-1103.108
ubuntu/linux-azure<4.15.0-1115.128~14.04.1
4.15.0-1115.128~14.04.1
ubuntu/linux-lts-xenial<4.4.0-223.256~14.04.1
4.4.0-223.256~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-223.256
4.4.0-223.256
ubuntu/linux-aws<4.4.0-1139.153
4.4.0-1139.153
ubuntu/linux-aws-hwe<4.15.0-1103.110~16.04.1
4.15.0-1103.110~16.04.1
ubuntu/linux-azure<4.15.0-1115.128~16.04.1
4.15.0-1115.128~16.04.1
ubuntu/linux-gcp<4.15.0-1100.113~16.04.1
4.15.0-1100.113~16.04.1
ubuntu/linux-hwe<4.15.0-144.148~16.04.1
4.15.0-144.148~16.04.1
ubuntu/linux-kvm<4.4.0-1104.113
4.4.0-1104.113
ubuntu/linux-oracle<4.15.0-1072.80~16.04.1
4.15.0-1072.80~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1073.79
4.4.0-1073.79
ubuntu/linux-fips*
ubuntu/linux<4.15.0-144.148
4.15.0-144.148
ubuntu/linux-aws<4.15.0-1103.110
4.15.0-1103.110
ubuntu/linux-aws-5.4<5.4.0-1049.51~18.04.1
5.4.0-1049.51~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1115.128
4.15.0-1115.128
ubuntu/linux-azure-5.4<5.4.0-1048.50~18.04.1
5.4.0-1048.50~18.04.1
ubuntu/linux-dell300x<4.15.0-1022.26
4.15.0-1022.26
ubuntu/linux-gcp-4.15<4.15.0-1100.113
4.15.0-1100.113
ubuntu/linux-gcp-5.4<5.4.0-1044.47~18.04.2
5.4.0-1044.47~18.04.2
ubuntu/linux-gke-5.4<5.4.0-1044.46~18.04.1
5.4.0-1044.46~18.04.1
ubuntu/linux-gkeop-5.4<5.4.0-1016.17~18.04.1
5.4.0-1016.17~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-74.83~18.04.1
5.4.0-74.83~18.04.1
ubuntu/linux-kvm<4.15.0-1092.94
4.15.0-1092.94
ubuntu/linux-oracle<4.15.0-1072.80
4.15.0-1072.80
ubuntu/linux-oracle-5.4<5.4.0-1046.50~18.04.2
5.4.0-1046.50~18.04.2
ubuntu/linux-raspi-5.4<5.4.0-1036.39~18.04.1
5.4.0-1036.39~18.04.1
ubuntu/linux-raspi2<4.15.0-1086.91
4.15.0-1086.91
ubuntu/linux-snapdragon<4.15.0-1103.112
4.15.0-1103.112
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-gcp-edge*
ubuntu/linux-gke-4.15*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-fips<4.15.0-2045.47
4.15.0-2045.47
ubuntu/linux-azure-fips<4.15.0-2027.30
4.15.0-2027.30
ubuntu/linux-fips<4.15.0-1060.68
4.15.0-1060.68
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-74.83
5.4.0-74.83
ubuntu/linux-aws<5.4.0-1049.51
5.4.0-1049.51
ubuntu/linux-azure<5.4.0-1048.50
5.4.0-1048.50
ubuntu/linux-bluefield<5.4.0-1012.15
5.4.0-1012.15
ubuntu/linux-gcp<5.4.0-1044.47
5.4.0-1044.47
ubuntu/linux-gke<5.4.0-1044.46
5.4.0-1044.46
ubuntu/linux-gkeop<5.4.0-1016.17
5.4.0-1016.17
ubuntu/linux-hwe-5.8<5.8.0-55.62~20.04.1
5.8.0-55.62~20.04.1
ubuntu/linux-kvm<5.4.0-1040.41
5.4.0-1040.41
ubuntu/linux-oem-5.10<5.10.0-1025.26
5.10.0-1025.26
ubuntu/linux-oracle<5.4.0-1046.50
5.4.0-1046.50
ubuntu/linux-raspi<5.4.0-1036.39
5.4.0-1036.39
ubuntu/linux-riscv-5.8<5.8.0-26.28~20.04.1
5.8.0-26.28~20.04.1
ubuntu/linux-oem-5.6*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
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-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-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-raspi-realtime*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1
  2. Upgrade

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

    Fixed in 4.4.0-1103.108
  3. Upgrade

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

    Fixed in 4.15.0-1115.128~14.04.1
  4. Upgrade

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

    Fixed in 4.4.0-223.256~14.04.1
  5. Upgrade

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

    Fixed in 4.4.0-223.256
  6. Upgrade

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

    Fixed in 4.4.0-1139.153
  7. Upgrade

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

    Fixed in 4.15.0-1103.110~16.04.1
  8. Upgrade

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

    Fixed in 4.15.0-1115.128~16.04.1
  9. Upgrade

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

    Fixed in 4.15.0-1100.113~16.04.1
  10. Upgrade

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

    Fixed in 4.15.0-144.148~16.04.1
  11. Upgrade

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

    Fixed in 4.4.0-1104.113
  12. Upgrade

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

    Fixed in 4.15.0-1072.80~16.04.1
  13. Upgrade

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

    Fixed in 4.4.0-1073.79
  14. Upgrade

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

    Fixed in 4.15.0-144.148
  15. Upgrade

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

    Fixed in 4.15.0-1103.110
  16. Upgrade

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

    Fixed in 5.4.0-1049.51~18.04.1
  17. Upgrade

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

    Fixed in 4.15.0-1115.128
  18. Upgrade

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

    Fixed in 5.4.0-1048.50~18.04.1
  19. Upgrade

    Upgrade ubuntu/linux-dell300x to a version that resolves this vulnerability.

    Fixed in 4.15.0-1022.26
  20. Upgrade

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

    Fixed in 4.15.0-1100.113
  21. Upgrade

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

    Fixed in 5.4.0-1044.47~18.04.2
  22. Upgrade

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

    Fixed in 5.4.0-1044.46~18.04.1
  23. Upgrade

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

    Fixed in 5.4.0-1016.17~18.04.1
  24. Upgrade

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

    Fixed in 5.4.0-74.83~18.04.1
  25. Upgrade

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

    Fixed in 4.15.0-1092.94
  26. Upgrade

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

    Fixed in 4.15.0-1072.80
  27. Upgrade

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

    Fixed in 5.4.0-1046.50~18.04.2
  28. Upgrade

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

    Fixed in 5.4.0-1036.39~18.04.1
  29. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1086.91
  30. Upgrade

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

    Fixed in 4.15.0-1103.112
  31. Upgrade

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

    Fixed in 4.15.0-2045.47
  32. Upgrade

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

    Fixed in 4.15.0-2027.30
  33. Upgrade

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

    Fixed in 4.15.0-1060.68
  34. Upgrade

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

    Fixed in 5.4.0-74.83
  35. Upgrade

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

    Fixed in 5.4.0-1049.51
  36. Upgrade

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

    Fixed in 5.4.0-1048.50
  37. Upgrade

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

    Fixed in 5.4.0-1012.15
  38. Upgrade

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

    Fixed in 5.4.0-1044.47
  39. Upgrade

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

    Fixed in 5.4.0-1044.46
  40. Upgrade

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

    Fixed in 5.4.0-1016.17
  41. Upgrade

    Upgrade ubuntu/linux-hwe-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-55.62~20.04.1
  42. Upgrade

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

    Fixed in 5.4.0-1040.41
  43. Upgrade

    Upgrade ubuntu/linux-oem-5.10 to a version that resolves this vulnerability.

    Fixed in 5.10.0-1025.26
  44. Upgrade

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

    Fixed in 5.4.0-1046.50
  45. Upgrade

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

    Fixed in 5.4.0-1036.39
  46. Upgrade

    Upgrade ubuntu/linux-riscv-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-26.28~20.04.1
  47. Upgrade

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

    Fixed in 5.4.0-1069.73+fips2
  48. Upgrade

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

    Fixed in 5.4.0-1073.76+fips1
  49. 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 22, 2021
CVE Published
via MITRE·07:17 AM
Data Sourced
via MITRE·07:17 AM
Description
Data Sourced
via OSV·09:15 AM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-28964?

The severity of CVE-2021-28964 is classified as high due to its potential to cause denial of service.

2

How do I fix CVE-2021-28964?

To fix CVE-2021-28964, update to a patched version of the Linux kernel, such as 5.10.223-1 or later.

3

Which versions of the Linux kernel are affected by CVE-2021-28964?

CVE-2021-28964 affects the Linux kernel versions up to and including 5.11.8.

4

What types of systems are impacted by CVE-2021-28964?

CVE-2021-28964 impacts systems running unpatched versions of the Linux kernel, as well as specific Fedora and Debian distributions.

5

Is there a workaround for CVE-2021-28964?

There is no specific known workaround for CVE-2021-28964 besides applying the appropriate kernel updates.

Company

Resources

Contact

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