CVE-2022-2503: Linux Kernel LoadPin bypass via dm-verity table reload

Published Aug 12, 2022
·
Updated

Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5

Affected Software

133 affected componentsFixes available
Linux Linux kernel<5.19
redhat/kernel<5.19
5.19
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
debian/linux<5.18.2-1
5.18.2-1
debian/linux<5.18.2-1
5.18.2-1
debian/linux<5.18.2-1
5.18.2-1
ubuntu/linux-aws<4.4.0-1117.123
4.4.0-1117.123
ubuntu/linux-azure<4.15.0-1149.164~14.04.1
4.15.0-1149.164~14.04.1
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<4.15.0-1139.150~16.04.1
4.15.0-1139.150~16.04.1
ubuntu/linux-azure<4.15.0-1149.164~16.04.1
4.15.0-1149.164~16.04.1
ubuntu/linux-gcp<4.15.0-1134.150~16.04.2
4.15.0-1134.150~16.04.2
ubuntu/linux-hwe<4.15.0-191.202~16.04.1
4.15.0-191.202~16.04.1
ubuntu/linux-kvm<4.4.0-1118.128
4.4.0-1118.128
ubuntu/linux-oracle<4.15.0-1104.115~16.04.1
4.15.0-1104.115~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1088.95
4.4.0-1088.95
ubuntu/linux-fips*
ubuntu/linux<4.15.0-191.202
4.15.0-191.202
ubuntu/linux-aws<4.15.0-1139.150
4.15.0-1139.150
ubuntu/linux-aws-5.4<5.4.0-1085.92~18.04.1
5.4.0-1085.92~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1149.164
4.15.0-1149.164
ubuntu/linux-azure-5.4<5.4.0-1091.96~18.04.1
5.4.0-1091.96~18.04.1
ubuntu/linux-dell300x<4.15.0-1051.56
4.15.0-1051.56
ubuntu/linux-gcp-4.15<4.15.0-1134.150
4.15.0-1134.150
ubuntu/linux-gcp-5.4<5.4.0-1089.97~18.04.1
5.4.0-1089.97~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-126.142~18.04.1
5.4.0-126.142~18.04.1
ubuntu/linux-ibm-5.4<5.4.0-1033.37~18.04.1
5.4.0-1033.37~18.04.1
ubuntu/linux-kvm<4.15.0-1125.130
4.15.0-1125.130
ubuntu/linux-oracle<4.15.0-1104.115
4.15.0-1104.115
ubuntu/linux-oracle-5.4<5.4.0-1083.91~18.04.1
5.4.0-1083.91~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1070.80~18.04.1
5.4.0-1070.80~18.04.1
ubuntu/linux-raspi2<4.15.0-1117.125
4.15.0-1117.125
ubuntu/linux-snapdragon<4.15.0-1135.145
4.15.0-1135.145
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<4.15.0-2078.83
4.15.0-2078.83
ubuntu/linux-azure-fips<4.15.0-2059.65
4.15.0-2059.65
ubuntu/linux-fips<4.15.0-1096.107
4.15.0-1096.107
ubuntu/linux-gcp-fips<4.15.0-2043.48
4.15.0-2043.48
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-126.142
5.4.0-126.142
ubuntu/linux-aws<5.4.0-1085.92
5.4.0-1085.92
ubuntu/linux-aws-5.15<5.15.0-1019.23~20.04.1
5.15.0-1019.23~20.04.1
ubuntu/linux-azure<5.4.0-1091.96
5.4.0-1091.96
ubuntu/linux-azure-5.15<5.15.0-1019.24~20.04.1
5.15.0-1019.24~20.04.1
ubuntu/linux-bluefield<5.4.0-1046.51
5.4.0-1046.51
ubuntu/linux-gcp<5.4.0-1089.97
5.4.0-1089.97
ubuntu/linux-gcp-5.15<5.15.0-1017.23~20.04.2
5.15.0-1017.23~20.04.2
ubuntu/linux-gke<5.4.0-1083.89
5.4.0-1083.89
ubuntu/linux-gke-5.15<5.15.0-1015.18~20.04.1
5.15.0-1015.18~20.04.1
ubuntu/linux-gkeop<5.4.0-1053.56
5.4.0-1053.56
ubuntu/linux-hwe-5.15<5.15.0-48.54~20.04.1
5.15.0-48.54~20.04.1
ubuntu/linux-ibm<5.4.0-1033.37
5.4.0-1033.37
ubuntu/linux-intel-iotg-5.15<5.15.0-1015.20~20.04.2
5.15.0-1015.20~20.04.2
ubuntu/linux-iot<5.4.0-1004.6
5.4.0-1004.6
ubuntu/linux-kvm<5.4.0-1075.80
5.4.0-1075.80
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-48.54~20.04.1
5.15.0-48.54~20.04.1
ubuntu/linux-oem-5.14<5.14.0-1044.49
5.14.0-1044.49
ubuntu/linux-oracle<5.4.0-1083.91
5.4.0-1083.91
ubuntu/linux-oracle-5.15<5.15.0-1017.22~20.04.1
5.15.0-1017.22~20.04.1
ubuntu/linux-raspi<5.4.0-1070.80
5.4.0-1070.80
ubuntu/linux-riscv-5.15<5.15.0-1018.21~20.04.1
5.15.0-1018.21~20.04.1
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-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
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<5.4.0-1085.92+fips1
5.4.0-1085.92+fips1
ubuntu/linux-azure-fips<5.4.0-1091.96+fips1
5.4.0-1091.96+fips1
ubuntu/linux-fips<5.4.0-1061.69
5.4.0-1061.69
ubuntu/linux-gcp-fips<5.4.0-1089.97+fips1
5.4.0-1089.97+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-47.51
5.15.0-47.51
ubuntu/linux-aws<5.15.0-1019.23
5.15.0-1019.23
ubuntu/linux-azure<5.15.0-1019.24
5.15.0-1019.24
ubuntu/linux-gcp<5.15.0-1017.23
5.15.0-1017.23
ubuntu/linux-gke<5.15.0-1015.18
5.15.0-1015.18
ubuntu/linux-gkeop<5.15.0-1002.4
5.15.0-1002.4
ubuntu/linux-ibm<5.15.0-1013.15
5.15.0-1013.15
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1015.20
5.15.0-1015.20
ubuntu/linux-kvm<5.15.0-1017.21
5.15.0-1017.21
ubuntu/linux-lowlatency<5.15.0-47.53
5.15.0-47.53
ubuntu/linux-nvidia<5.15.0-1007.7
5.15.0-1007.7
ubuntu/linux-oem-5.17<5.17.0-1013.14
5.17.0-1013.14
ubuntu/linux-oracle<5.15.0-1017.22
5.15.0-1017.22
ubuntu/linux-raspi<5.15.0-1014.16
5.15.0-1014.16
ubuntu/linux-realtime*
ubuntu/linux-riscv<5.15.0-1018.21
5.15.0-1018.21
ubuntu/linux-realtime<5.15.0-1020.20
5.15.0-1020.20
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/Kernel to a version that resolves this vulnerability.

    Fixed in 5.19
  2. Upgrade

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

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
  3. Upgrade

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

    Fixed in 5.18.2-1
  4. Upgrade

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

    Fixed in 4.4.0-1117.123
  5. Upgrade

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

    Fixed in 4.15.0-1149.164~14.04.1
  6. Upgrade

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

    Fixed in 4.4.0-239.273~14.04.1
  7. Upgrade

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

    Fixed in 4.4.0-239.273
  8. Upgrade

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

    Fixed in 4.4.0-1155.170
  9. Upgrade

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

    Fixed in 4.15.0-1139.150~16.04.1
  10. Upgrade

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

    Fixed in 4.15.0-1149.164~16.04.1
  11. Upgrade

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

    Fixed in 4.15.0-1134.150~16.04.2
  12. Upgrade

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

    Fixed in 4.15.0-191.202~16.04.1
  13. Upgrade

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

    Fixed in 4.4.0-1118.128
  14. Upgrade

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

    Fixed in 4.15.0-1104.115~16.04.1
  15. Upgrade

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

    Fixed in 4.4.0-1088.95
  16. Upgrade

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

    Fixed in 4.15.0-191.202
  17. Upgrade

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

    Fixed in 4.15.0-1139.150
  18. Upgrade

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

    Fixed in 5.4.0-1085.92~18.04.1
  19. Upgrade

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

    Fixed in 4.15.0-1149.164
  20. Upgrade

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

    Fixed in 5.4.0-1091.96~18.04.1
  21. Upgrade

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

    Fixed in 4.15.0-1051.56
  22. Upgrade

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

    Fixed in 4.15.0-1134.150
  23. Upgrade

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

    Fixed in 5.4.0-1089.97~18.04.1
  24. Upgrade

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

    Fixed in 5.4.0-126.142~18.04.1
  25. Upgrade

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

    Fixed in 5.4.0-1033.37~18.04.1
  26. Upgrade

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

    Fixed in 4.15.0-1125.130
  27. Upgrade

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

    Fixed in 4.15.0-1104.115
  28. Upgrade

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

    Fixed in 5.4.0-1083.91~18.04.1
  29. Upgrade

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

    Fixed in 5.4.0-1070.80~18.04.1
  30. Upgrade

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

    Fixed in 4.15.0-1117.125
  31. Upgrade

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

    Fixed in 4.15.0-1135.145
  32. Upgrade

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

    Fixed in 4.15.0-2078.83
  33. Upgrade

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

    Fixed in 4.15.0-2059.65
  34. Upgrade

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

    Fixed in 4.15.0-1096.107
  35. Upgrade

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

    Fixed in 4.15.0-2043.48
  36. Upgrade

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

    Fixed in 5.4.0-126.142
  37. Upgrade

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

    Fixed in 5.4.0-1085.92
  38. Upgrade

    Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1019.23~20.04.1
  39. Upgrade

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

    Fixed in 5.4.0-1091.96
  40. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1019.24~20.04.1
  41. Upgrade

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

    Fixed in 5.4.0-1046.51
  42. Upgrade

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

    Fixed in 5.4.0-1089.97
  43. Upgrade

    Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1017.23~20.04.2
  44. Upgrade

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

    Fixed in 5.4.0-1083.89
  45. Upgrade

    Upgrade ubuntu/linux-gke-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1015.18~20.04.1
  46. Upgrade

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

    Fixed in 5.4.0-1053.56
  47. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-48.54~20.04.1
  48. Upgrade

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

    Fixed in 5.4.0-1033.37
  49. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1015.20~20.04.2
  50. Upgrade

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

    Fixed in 5.4.0-1004.6
  51. Upgrade

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

    Fixed in 5.4.0-1075.80
  52. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-48.54~20.04.1
  53. Upgrade

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

    Fixed in 5.14.0-1044.49
  54. Upgrade

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

    Fixed in 5.4.0-1083.91
  55. Upgrade

    Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1017.22~20.04.1
  56. Upgrade

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

    Fixed in 5.4.0-1070.80
  57. Upgrade

    Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1018.21~20.04.1
  58. Upgrade

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

    Fixed in 5.4.0-1085.92+fips1
  59. Upgrade

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

    Fixed in 5.4.0-1091.96+fips1
  60. Upgrade

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

    Fixed in 5.4.0-1061.69
  61. Upgrade

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

    Fixed in 5.4.0-1089.97+fips1
  62. Upgrade

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

    Fixed in 5.15.0-47.51
  63. Upgrade

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

    Fixed in 5.15.0-1019.23
  64. Upgrade

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

    Fixed in 5.15.0-1019.24
  65. Upgrade

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

    Fixed in 5.15.0-1017.23
  66. Upgrade

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

    Fixed in 5.15.0-1015.18
  67. Upgrade

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

    Fixed in 5.15.0-1002.4
  68. Upgrade

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

    Fixed in 5.15.0-1013.15
  69. Upgrade

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

    Fixed in 5.15.0-1015.20
  70. Upgrade

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

    Fixed in 5.15.0-1017.21
  71. Upgrade

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

    Fixed in 5.15.0-47.53
  72. Upgrade

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

    Fixed in 5.15.0-1007.7
  73. Upgrade

    Upgrade ubuntu/linux-oem-5.17 to a version that resolves this vulnerability.

    Fixed in 5.17.0-1013.14
  74. Upgrade

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

    Fixed in 5.15.0-1017.22
  75. Upgrade

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

    Fixed in 5.15.0-1014.16
  76. Upgrade

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

    Fixed in 5.15.0-1018.21
  77. Upgrade

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

    Fixed in 5.15.0-1020.20
  78. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch 4caae58406f8ceb741603eee460d79bacca9b1b5

Event History

Aug 12, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionSeverityWeakness
Data Sourced
via OSV·11:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·11:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Mar 13, 2023
Data Sourced
via Red Hat·05:50 PM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2022-2503?

CVE-2022-2503 has a medium severity-level risk rating.

2

How do I fix CVE-2022-2503?

To fix CVE-2022-2503, ensure your Linux Kernel is updated to versions 5.19 or higher for Red Hat or appropriate patched versions for Debian.

3

What systems are affected by CVE-2022-2503?

CVE-2022-2503 affects various versions of the Linux Kernel across Red Hat and Debian distributions.

4

What is the impact of CVE-2022-2503 on system security?

CVE-2022-2503 may allow unauthorized module or firmware loading, potentially compromising the root filesystem's integrity.

5

Is there a public exploit for CVE-2022-2503?

As of now, there have been no widely reported public exploits for CVE-2022-2503.

Company

Resources

Contact

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