CVE-2023-30456: Medium severity Linux Linux kernel vulnerability

Published Apr 10, 2023
·
Updated

An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x8664 lacks consistency checks for CR0 and CR4.

Other sources

Linux Kernel could allow a local authenticated attacker to gain elevated privileges on the system, caused by the lack of consistency checks for CR0 and CR4 in arch/x86/kvm/vmx/nested.c. By sending a specially-crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges.

— IBM

Affected Software

143 affected componentsFixes available
Linux Linux kernel<6.2.8
Linux Linux kernel=6.3-rc1
Linux Linux kernel=6.3-rc2
IBM Security Verify Governance, Identity Manager software component<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager virtual appliance component<=ISVG 10.0.2
redhat/kernel<6.3
6.3
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-17.2.13-1
ubuntu/linux<3.13.0-197.248
3.13.0-197.248
ubuntu/linux-aws<4.4.0-1119.125
4.4.0-1119.125
ubuntu/linux-azure<4.15.0-1166.181~14.04.1
4.15.0-1166.181~14.04.1
ubuntu/linux-lts-xenial<4.4.0-241.275~14.04.1
4.4.0-241.275~14.04.1
ubuntu/linux<4.4.0-241.275
4.4.0-241.275
ubuntu/linux-aws<4.4.0-1157.172
4.4.0-1157.172
ubuntu/linux-aws-hwe<4.15.0-1157.170~16.04.1
4.15.0-1157.170~16.04.1
ubuntu/linux-azure<4.15.0-1166.181~16.04.1
4.15.0-1166.181~16.04.1
ubuntu/linux-gcp<4.15.0-1151.167~16.04.1
4.15.0-1151.167~16.04.1
ubuntu/linux-hwe<4.15.0-212.223~16.04.1
4.15.0-212.223~16.04.1
ubuntu/linux-kvm<4.4.0-1120.130
4.4.0-1120.130
ubuntu/linux-oracle<4.15.0-1120.131~16.04.1
4.15.0-1120.131~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1089.96
4.4.0-1089.96
ubuntu/linux-fips*
ubuntu/linux<4.15.0-212.223
4.15.0-212.223
ubuntu/linux-aws<4.15.0-1157.170
4.15.0-1157.170
ubuntu/linux-aws-5.4<5.4.0-1103.111~18.04.1
5.4.0-1103.111~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1166.181
4.15.0-1166.181
ubuntu/linux-azure-5.4<5.4.0-1109.115~18.04.1
5.4.0-1109.115~18.04.1
ubuntu/linux-gcp-4.15<4.15.0-1151.167
4.15.0-1151.167
ubuntu/linux-gcp-5.4<5.4.0-1106.115~18.04.1
5.4.0-1106.115~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-150.167~18.04.1
5.4.0-150.167~18.04.1
ubuntu/linux-ibm-5.4<5.4.0-1050.55~18.04.1
5.4.0-1050.55~18.04.1
ubuntu/linux-kvm<4.15.0-1141.146
4.15.0-1141.146
ubuntu/linux-oracle<4.15.0-1120.131
4.15.0-1120.131
ubuntu/linux-oracle-5.4<5.4.0-1102.111~18.04.1
5.4.0-1102.111~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1086.97~18.04.1
5.4.0-1086.97~18.04.1
ubuntu/linux-snapdragon<4.15.0-1151.161
4.15.0-1151.161
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<4.15.0-2096.102
4.15.0-2096.102
ubuntu/linux-azure-fips<4.15.0-2075.81
4.15.0-2075.81
ubuntu/linux-fips<4.15.0-1112.123
4.15.0-1112.123
ubuntu/linux-gcp-fips<4.15.0-2059.64
4.15.0-2059.64
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-150.167
5.4.0-150.167
ubuntu/linux-aws<5.4.0-1103.111
5.4.0-1103.111
ubuntu/linux-aws-5.15<5.15.0-1037.41~20.04.1
5.15.0-1037.41~20.04.1
ubuntu/linux-azure<5.4.0-1109.115
5.4.0-1109.115
ubuntu/linux-azure-5.15<5.15.0-1039.46~20.04.1
5.15.0-1039.46~20.04.1
ubuntu/linux-bluefield<5.4.0-1064.70
5.4.0-1064.70
ubuntu/linux-gcp<5.4.0-1106.115
5.4.0-1106.115
ubuntu/linux-gcp-5.15<5.15.0-1035.43~20.04.1
5.15.0-1035.43~20.04.1
ubuntu/linux-gke<5.4.0-1100.107
5.4.0-1100.107
ubuntu/linux-gke-5.15<5.15.0-1034.39~20.04.1
5.15.0-1034.39~20.04.1
ubuntu/linux-gkeop<5.4.0-1070.74
5.4.0-1070.74
ubuntu/linux-gkeop-5.15<5.15.0-1021.26~20.04.1
5.15.0-1021.26~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-73.80~20.04.1
5.15.0-73.80~20.04.1
ubuntu/linux-ibm<5.4.0-1050.55
5.4.0-1050.55
ubuntu/linux-intel-iotg-5.15<5.15.0-1031.36~20.04.1
5.15.0-1031.36~20.04.1
ubuntu/linux-iot<5.4.0-1017.18
5.4.0-1017.18
ubuntu/linux-kvm<5.4.0-1092.98
5.4.0-1092.98
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-73.80~20.04.1
5.15.0-73.80~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1014.14~20.04.1
5.15.0-1014.14~20.04.1
ubuntu/linux-oracle<5.4.0-1102.111
5.4.0-1102.111
ubuntu/linux-oracle-5.15<5.15.0-1036.42~20.04.1
5.15.0-1036.42~20.04.1
ubuntu/linux-raspi<5.4.0-1086.97
5.4.0-1086.97
ubuntu/linux-riscv-5.15<5.15.0-1034.38~20.04.1
5.15.0-1034.38~20.04.1
ubuntu/linux-xilinx-zynqmp<5.4.0-1024.28
5.4.0-1024.28
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-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<5.4.0-1103.111+fips1
5.4.0-1103.111+fips1
ubuntu/linux-azure-fips<5.4.0-1109.115+fips1
5.4.0-1109.115+fips1
ubuntu/linux-fips<5.4.0-1078.87
5.4.0-1078.87
ubuntu/linux-gcp-fips<5.4.0-1106.115+fips1
5.4.0-1106.115+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-73.80
5.15.0-73.80
ubuntu/linux-aws<5.15.0-1037.41
5.15.0-1037.41
ubuntu/linux-azure<5.15.0-1039.46
5.15.0-1039.46
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-fde<5.15.0-1039.46.1
5.15.0-1039.46.1
ubuntu/linux-gcp<5.15.0-1035.43
5.15.0-1035.43
ubuntu/linux-gke<5.15.0-1034.39
5.15.0-1034.39
ubuntu/linux-gkeop<5.15.0-1021.26
5.15.0-1021.26
ubuntu/linux-hwe-5.19<5.19.0-43.44~22.04.1
5.19.0-43.44~22.04.1
ubuntu/linux-ibm<5.15.0-1031.34
5.15.0-1031.34
ubuntu/linux-intel-iotg<5.15.0-1031.36
5.15.0-1031.36
ubuntu/linux-kvm<5.15.0-1034.39
5.15.0-1034.39
ubuntu/linux-lowlatency<5.15.0-73.80
5.15.0-73.80
ubuntu/linux-lowlatency-hwe-5.19<5.19.0-1025.26~22.04.1
5.19.0-1025.26~22.04.1
ubuntu/linux-nvidia<5.15.0-1026.26
5.15.0-1026.26
ubuntu/linux-nvidia-tegra<5.15.0-1014.14
5.15.0-1014.14
ubuntu/linux-oem-5.17<5.17.0-1032.33
5.17.0-1032.33
ubuntu/linux-oem-6.0<6.0.0-1017.17
6.0.0-1017.17
ubuntu/linux-oem-6.1<6.1.0-1009.9
6.1.0-1009.9
ubuntu/linux-oracle<5.15.0-1036.42
5.15.0-1036.42
ubuntu/linux-raspi<5.15.0-1030.32
5.15.0-1030.32
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-bluefield<5.15.0-1017.19
5.15.0-1017.19
ubuntu/linux-intel-iot-realtime<5.15.0-1028.33
5.15.0-1028.33
ubuntu/linux-realtime<5.15.0-1039.42
5.15.0-1039.42
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 6.3
  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 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1
  3. Upgrade

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

    Fixed in 3.13.0-197.248
  4. Upgrade

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

    Fixed in 4.4.0-1119.125
  5. Upgrade

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

    Fixed in 4.15.0-1166.181~14.04.1
  6. Upgrade

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

    Fixed in 4.4.0-241.275~14.04.1
  7. Upgrade

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

    Fixed in 4.4.0-241.275
  8. Upgrade

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

    Fixed in 4.4.0-1157.172
  9. Upgrade

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

    Fixed in 4.15.0-1157.170~16.04.1
  10. Upgrade

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

    Fixed in 4.15.0-1166.181~16.04.1
  11. Upgrade

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

    Fixed in 4.15.0-1151.167~16.04.1
  12. Upgrade

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

    Fixed in 4.15.0-212.223~16.04.1
  13. Upgrade

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

    Fixed in 4.4.0-1120.130
  14. Upgrade

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

    Fixed in 4.15.0-1120.131~16.04.1
  15. Upgrade

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

    Fixed in 4.4.0-1089.96
  16. Upgrade

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

    Fixed in 4.15.0-212.223
  17. Upgrade

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

    Fixed in 4.15.0-1157.170
  18. Upgrade

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

    Fixed in 5.4.0-1103.111~18.04.1
  19. Upgrade

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

    Fixed in 4.15.0-1166.181
  20. Upgrade

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

    Fixed in 5.4.0-1109.115~18.04.1
  21. Upgrade

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

    Fixed in 4.15.0-1151.167
  22. Upgrade

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

    Fixed in 5.4.0-1106.115~18.04.1
  23. Upgrade

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

    Fixed in 5.4.0-150.167~18.04.1
  24. Upgrade

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

    Fixed in 5.4.0-1050.55~18.04.1
  25. Upgrade

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

    Fixed in 4.15.0-1141.146
  26. Upgrade

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

    Fixed in 4.15.0-1120.131
  27. Upgrade

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

    Fixed in 5.4.0-1102.111~18.04.1
  28. Upgrade

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

    Fixed in 5.4.0-1086.97~18.04.1
  29. Upgrade

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

    Fixed in 4.15.0-1151.161
  30. Upgrade

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

    Fixed in 4.15.0-2096.102
  31. Upgrade

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

    Fixed in 4.15.0-2075.81
  32. Upgrade

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

    Fixed in 4.15.0-1112.123
  33. Upgrade

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

    Fixed in 4.15.0-2059.64
  34. Upgrade

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

    Fixed in 5.4.0-150.167
  35. Upgrade

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

    Fixed in 5.4.0-1103.111
  36. Upgrade

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

    Fixed in 5.15.0-1037.41~20.04.1
  37. Upgrade

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

    Fixed in 5.4.0-1109.115
  38. Upgrade

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

    Fixed in 5.15.0-1039.46~20.04.1
  39. Upgrade

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

    Fixed in 5.4.0-1064.70
  40. Upgrade

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

    Fixed in 5.4.0-1106.115
  41. Upgrade

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

    Fixed in 5.15.0-1035.43~20.04.1
  42. Upgrade

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

    Fixed in 5.4.0-1100.107
  43. Upgrade

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

    Fixed in 5.15.0-1034.39~20.04.1
  44. Upgrade

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

    Fixed in 5.4.0-1070.74
  45. Upgrade

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

    Fixed in 5.15.0-1021.26~20.04.1
  46. Upgrade

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

    Fixed in 5.15.0-73.80~20.04.1
  47. Upgrade

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

    Fixed in 5.4.0-1050.55
  48. Upgrade

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

    Fixed in 5.15.0-1031.36~20.04.1
  49. Upgrade

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

    Fixed in 5.4.0-1017.18
  50. Upgrade

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

    Fixed in 5.4.0-1092.98
  51. Upgrade

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

    Fixed in 5.15.0-73.80~20.04.1
  52. Upgrade

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

    Fixed in 5.15.0-1014.14~20.04.1
  53. Upgrade

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

    Fixed in 5.4.0-1102.111
  54. Upgrade

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

    Fixed in 5.15.0-1036.42~20.04.1
  55. Upgrade

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

    Fixed in 5.4.0-1086.97
  56. Upgrade

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

    Fixed in 5.15.0-1034.38~20.04.1
  57. Upgrade

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

    Fixed in 5.4.0-1024.28
  58. Upgrade

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

    Fixed in 5.4.0-1103.111+fips1
  59. Upgrade

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

    Fixed in 5.4.0-1109.115+fips1
  60. Upgrade

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

    Fixed in 5.4.0-1078.87
  61. Upgrade

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

    Fixed in 5.4.0-1106.115+fips1
  62. Upgrade

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

    Fixed in 5.15.0-73.80
  63. Upgrade

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

    Fixed in 5.15.0-1037.41
  64. Upgrade

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

    Fixed in 5.15.0-1039.46
  65. Upgrade

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

    Fixed in 5.15.0-1039.46.1
  66. Upgrade

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

    Fixed in 5.15.0-1035.43
  67. Upgrade

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

    Fixed in 5.15.0-1034.39
  68. Upgrade

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

    Fixed in 5.15.0-1021.26
  69. Upgrade

    Upgrade ubuntu/linux-hwe-5.19 to a version that resolves this vulnerability.

    Fixed in 5.19.0-43.44~22.04.1
  70. Upgrade

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

    Fixed in 5.15.0-1031.34
  71. Upgrade

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

    Fixed in 5.15.0-1031.36
  72. Upgrade

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

    Fixed in 5.15.0-1034.39
  73. Upgrade

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

    Fixed in 5.15.0-73.80
  74. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.19 to a version that resolves this vulnerability.

    Fixed in 5.19.0-1025.26~22.04.1
  75. Upgrade

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

    Fixed in 5.15.0-1026.26
  76. Upgrade

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

    Fixed in 5.15.0-1014.14
  77. Upgrade

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

    Fixed in 5.17.0-1032.33
  78. Upgrade

    Upgrade ubuntu/linux-oem-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.0-1017.17
  79. Upgrade

    Upgrade ubuntu/linux-oem-6.1 to a version that resolves this vulnerability.

    Fixed in 6.1.0-1009.9
  80. Upgrade

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

    Fixed in 5.15.0-1036.42
  81. Upgrade

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

    Fixed in 5.15.0-1030.32
  82. Upgrade

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

    Fixed in 5.15.0-1017.19
  83. Upgrade

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

    Fixed in 5.15.0-1028.33
  84. Upgrade

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

    Fixed in 5.15.0-1039.42

Event History

Apr 10, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via OSV·12:00 AM
DescriptionSeverity
Data Sourced
via NVD·02:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Apr 20, 2023
Data Sourced
via Red Hat·08:50 PM
DescriptionSeverityAffected Software
Nov 11, 2026
Data Sourced
via OSV·09:37 AM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2023-30456?

CVE-2023-30456 is considered a high-severity vulnerability due to the lack of consistency checks in nVMX on x86_64.

2

How do I fix CVE-2023-30456?

To fix CVE-2023-30456, upgrade the Linux kernel to version 6.3 or later, or apply the recommended patches.

3

Which versions of the Linux kernel are affected by CVE-2023-30456?

CVE-2023-30456 affects all versions of the Linux kernel prior to 6.2.8.

4

What components are impacted by CVE-2023-30456?

CVE-2023-30456 impacts the nVMX functionality in the Linux kernel on x86_64 architectures.

5

Is there a workaround for CVE-2023-30456 until a fix is applied?

There are no specific workarounds for CVE-2023-30456; the best action is to apply the fix as soon as possible.

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