CVE-2021-45868: Use After Free

Published Mar 18, 2022
·
Updated

In the Linux kernel before 5.15.3, fs/quota/quotatree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.

Affected Software

134 affected componentsFixes available
Linux Linux kernel<5.15.3
All of the following
NetApp H300s Firmware
NetApp H300s
All of the following
NetApp H700s Firmware
NetApp H700s
All of the following
NetApp H300e Firmware
NetApp H300e
All of the following
NetApp H500e Firmware
NetApp H500e
All of the following
NetApp H700e Firmware
NetApp H700e
All of the following
NetApp H410s Firmware
NetApp H410s
All of the following
NetApp H410c Firmware
NetApp H410c
All of the following
NetApp H500s Firmware
NetApp H500s
NetApp H300s Firmware
NetApp H300s
NetApp H700s Firmware
NetApp H700s
NetApp H300e Firmware
NetApp H300e
NetApp H500e Firmware
NetApp H500e
NetApp H700e Firmware
NetApp H700e
NetApp H410s Firmware
NetApp H410s
NetApp H410c Firmware
NetApp H410c
NetApp H500s Firmware
NetApp H500s
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.22-16.12.25-1
ubuntu/linux-aws<4.4.0-1117.123
4.4.0-1117.123
ubuntu/linux-azure<4.15.0-1130.143~14.04.1
4.15.0-1130.143~14.04.1
ubuntu/linux-lts-xenial<4.4.0-239.273~14.04.1
4.4.0-239.273~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-239.273
4.4.0-239.273
ubuntu/linux-aws<4.4.0-1155.170
4.4.0-1155.170
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-kvm<4.4.0-1118.128
4.4.0-1118.128
ubuntu/linux-oracle<4.15.0-1086.94~16.04.1
4.15.0-1086.94~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1088.95
4.4.0-1088.95
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-dell300x<4.15.0-1034.39
4.15.0-1034.39
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-gke-5.4<5.4.0-1061.64~18.04.1
5.4.0-1061.64~18.04.1
ubuntu/linux-gkeop-5.4<5.4.0-1032.33~18.04.1
5.4.0-1032.33~18.04.1
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-raspi2<4.15.0-1102.109
4.15.0-1102.109
ubuntu/linux-snapdragon<4.15.0-1119.128
4.15.0-1119.128
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-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-aws-5.13<5.13.0-1012.13~20.04.1
5.13.0-1012.13~20.04.1
ubuntu/linux-azure<5.4.0-1068.71
5.4.0-1068.71
ubuntu/linux-azure-5.13<5.13.0-1013.15~20.04.1
5.13.0-1013.15~20.04.1
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-gcp-5.13<5.13.0-1013.16~20.04.1
5.13.0-1013.16~20.04.1
ubuntu/linux-gke<5.4.0-1061.64
5.4.0-1061.64
ubuntu/linux-gkeop<5.4.0-1032.33
5.4.0-1032.33
ubuntu/linux-hwe-5.13<5.13.0-28.31~20.04.1
5.13.0-28.31~20.04.1
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-oem-5.14<5.14.0-1013.13
5.14.0-1013.13
ubuntu/linux-oracle<5.4.0-1062.66
5.4.0-1062.66
ubuntu/linux-oracle-5.13<5.13.0-1016.20~20.04.1
5.13.0-1016.20~20.04.1
ubuntu/linux-raspi<5.4.0-1052.58
5.4.0-1052.58
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.8*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.8*
ubuntu/linux-hwe-5.11*
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-5.8*
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-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 6.12.22-1Fixed in 6.12.25-1
  2. Upgrade

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

    Fixed in 4.4.0-1117.123
  3. Upgrade

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

    Fixed in 4.15.0-1130.143~14.04.1
  4. Upgrade

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

    Fixed in 4.4.0-239.273~14.04.1
  5. Upgrade

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

    Fixed in 4.4.0-239.273
  6. Upgrade

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

    Fixed in 4.4.0-1155.170
  7. Upgrade

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

    Fixed in 4.15.0-1119.126~16.04.2
  8. Upgrade

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

    Fixed in 4.15.0-1130.143~16.04.1
  9. Upgrade

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

    Fixed in 4.15.0-1115.129~16.04.1
  10. Upgrade

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

    Fixed in 4.15.0-167.175~16.04.1
  11. Upgrade

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

    Fixed in 4.4.0-1118.128
  12. Upgrade

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

    Fixed in 4.15.0-1086.94~16.04.1
  13. Upgrade

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

    Fixed in 4.4.0-1088.95
  14. Upgrade

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

    Fixed in 4.15.0-167.175
  15. Upgrade

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

    Fixed in 4.15.0-1119.127
  16. Upgrade

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

    Fixed in 5.4.0-1064.67~18.04.1
  17. Upgrade

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

    Fixed in 4.15.0-1131.144
  18. Upgrade

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

    Fixed in 5.4.0-1068.71~18.04.1
  19. Upgrade

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

    Fixed in 4.15.0-1034.39
  20. Upgrade

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

    Fixed in 4.15.0-1115.129
  21. Upgrade

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

    Fixed in 5.4.0-1063.67~18.04.1
  22. Upgrade

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

    Fixed in 5.4.0-1061.64~18.04.1
  23. Upgrade

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

    Fixed in 5.4.0-1032.33~18.04.1
  24. Upgrade

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

    Fixed in 5.4.0-97.110~18.04.1
  25. Upgrade

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

    Fixed in 5.4.0-1014.15~18.04.1
  26. Upgrade

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

    Fixed in 4.15.0-1106.108
  27. Upgrade

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

    Fixed in 4.15.0-1086.94
  28. Upgrade

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

    Fixed in 5.4.0-1062.66~18.04.1
  29. Upgrade

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

    Fixed in 5.4.0-1052.58~18.04.1
  30. Upgrade

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

    Fixed in 4.15.0-1102.109
  31. Upgrade

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

    Fixed in 4.15.0-1119.128
  32. Upgrade

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

    Fixed in 4.15.0-2060.62
  33. Upgrade

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

    Fixed in 4.15.0-2042.46
  34. Upgrade

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

    Fixed in 4.15.0-1076.85
  35. Upgrade

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

    Fixed in 4.15.0-2025.27
  36. Upgrade

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

    Fixed in 5.4.0-97.110
  37. Upgrade

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

    Fixed in 5.4.0-1064.67
  38. Upgrade

    Upgrade ubuntu/linux-aws-5.13 to a version that resolves this vulnerability.

    Fixed in 5.13.0-1012.13~20.04.1
  39. Upgrade

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

    Fixed in 5.4.0-1068.71
  40. Upgrade

    Upgrade ubuntu/linux-azure-5.13 to a version that resolves this vulnerability.

    Fixed in 5.13.0-1013.15~20.04.1
  41. Upgrade

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

    Fixed in 5.4.0-1026.29
  42. Upgrade

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

    Fixed in 5.4.0-1063.67
  43. Upgrade

    Upgrade ubuntu/linux-gcp-5.13 to a version that resolves this vulnerability.

    Fixed in 5.13.0-1013.16~20.04.1
  44. Upgrade

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

    Fixed in 5.4.0-1061.64
  45. Upgrade

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

    Fixed in 5.4.0-1032.33
  46. Upgrade

    Upgrade ubuntu/linux-hwe-5.13 to a version that resolves this vulnerability.

    Fixed in 5.13.0-28.31~20.04.1
  47. Upgrade

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

    Fixed in 5.4.0-1013.14
  48. Upgrade

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

    Fixed in 5.4.0-1054.56
  49. Upgrade

    Upgrade ubuntu/linux-oem-5.14 to a version that resolves this vulnerability.

    Fixed in 5.14.0-1013.13
  50. Upgrade

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

    Fixed in 5.4.0-1062.66
  51. Upgrade

    Upgrade ubuntu/linux-oracle-5.13 to a version that resolves this vulnerability.

    Fixed in 5.13.0-1016.20~20.04.1
  52. Upgrade

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

    Fixed in 5.4.0-1052.58
  53. Upgrade

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

    Fixed in 5.4.0-1069.73+fips2
  54. Upgrade

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

    Fixed in 5.4.0-1073.76+fips1
  55. Upgrade

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

    Fixed in 5.4.0-1041.47
  56. Upgrade

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

    Fixed in 5.4.0-1067.71~20.04.1
  57. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Fixed in 5.15.3

Event History

Mar 18, 2022
CVE Published
via MITRE·06:22 AM
Data Sourced
via MITRE·06:22 AM
Description
Data Sourced
via OSV·07:15 AM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-45868?

CVE-2021-45868 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-2021-45868?

To fix CVE-2021-45868, update to the following Linux kernel versions: 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.13-1.

3

Which versions of the Linux kernel are affected by CVE-2021-45868?

CVE-2021-45868 affects the Linux kernel versions earlier than 5.15.3.

4

What types of systems are impacted by CVE-2021-45868?

CVE-2021-45868 primarily impacts systems running the Linux kernel prior to version 5.15.3.

5

Is there any workaround for CVE-2021-45868?

There is no specific workaround for CVE-2021-45868; the recommended action is to apply the relevant updates to the kernel.

Company

Resources

Contact

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