p PatchFirst

CVE-2022-49556

CVE-2022-49556 · KVM: SVM: Use kzalloc for sev ioctl interfaces to prevent kernel data leak

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Use kzalloc for sev ioctl interfaces to prevent kernel data leak For some sev ioctl interfaces, the length parameter that is passed maybe less than or equal to SEV_FW_BLOB_MAX_SIZE, but larger than the data that PSP firmware returns. In this case, kmalloc will allocate memory that is the size of the input rather than the size of the data. Since PSP firmware doesn't fully overwrite the allocated buffer, these sev ioctl interface may return uninitialized kernel slab memory.

CVSS 7.1 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • linux

    Versions
    • ≥ eaf78265a4ab33935d3a0f1407ce4a91aac4d4d5, < 401bef1f95de92c3a8c6eece46e02fa88d7285ee: Affected (git)
    • ≥ eaf78265a4ab33935d3a0f1407ce4a91aac4d4d5, < d8fdb4b24097472ff6b3c0559448200d420b1418: Affected (git)
    • ≥ eaf78265a4ab33935d3a0f1407ce4a91aac4d4d5, < bbdcc644b59e01e98c68894a9fab42b9687f42b0: Affected (git)
    • ≥ eaf78265a4ab33935d3a0f1407ce4a91aac4d4d5, < 57a01725339f9d82b099102ba2751621b1caab93: Affected (git)
    • ≥ eaf78265a4ab33935d3a0f1407ce4a91aac4d4d5, < d22d2474e3953996f03528b84b7f52cc26a39403: Affected (git)

    No fix published

  • linux

    Versions
    • 5.7: Affected
    • ≥ 0, < 5.7: Not affected (semver)
    • ≥ 5.10.124, ≤ 5.10.*: Not affected (semver)
    • ≥ 5.15.45, ≤ 5.15.*: Not affected (semver)
    • ≥ 5.17.13, ≤ 5.17.*: Not affected (semver)
    • ≥ 5.18.2, ≤ 5.18.*: Not affected (semver)
    • ≥ 5.19: Not affected (original_commit_for_fix)

    No fix published

  • linux Debian:12

    Affected ranges
    • ECOSYSTEM: < 5.18.2-1

    Update to 5.18.2-1

  • linux Debian:13

    Affected ranges
    • ECOSYSTEM: < 5.18.2-1

    Update to 5.18.2-1

  • linux Debian:14

    Affected ranges
    • ECOSYSTEM: < 5.18.2-1

    Update to 5.18.2-1

  • linux-hwe-edge Ubuntu:16.04:LTS

    Versions
    • 4.8.0-28.30~16.04.1
    • 4.8.0-30.32~16.04.1
    • 4.8.0-32.34~16.04.1
    • 4.8.0-34.36~16.04.1
    • 4.10.0-14.16~16.04.1
    • 4.10.0-19.21~16.04.1
    • 4.10.0-20.22~16.04.1
    • 4.10.0-21.23~16.04.1
    • 4.10.0-22.24~16.04.1
    • 4.10.0-24.28~16.04.1
    • 4.10.0-26.30~16.04.1
    • 4.11.0-13.19~16.04.1
    • 4.11.0-14.20~16.04.1
    • 4.13.0-16.19~16.04.3
    • 4.13.0-17.20~16.04.1
    • 4.13.0-19.22~16.04.1
    • 4.13.0-21.24~16.04.1
    • 4.13.0-25.29~16.04.2
    • 4.15.0-13.14~16.04.1
    • 4.15.0-15.16~16.04.1
    • 4.15.0-20.21~16.04.1
    • 4.15.0-22.24~16.04.1
    • 4.15.0-23.25~16.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-aws-5.0 Ubuntu:18.04:LTS

    Versions
    • 5.0.0-1021.24~18.04.1
    • 5.0.0-1022.25~18.04.1
    • 5.0.0-1023.26~18.04.1
    • 5.0.0-1024.27~18.04.1
    • 5.0.0-1025.28
    • 5.0.0-1027.30
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-aws-5.3 Ubuntu:18.04:LTS

    Versions
    • 5.3.0-1016.17~18.04.1
    • 5.3.0-1017.18~18.04.1
    • 5.3.0-1019.21~18.04.1
    • 5.3.0-1023.25~18.04.1
    • 5.3.0-1028.30~18.04.1
    • 5.3.0-1030.32~18.04.1
    • 5.3.0-1032.34~18.04.2
    • 5.3.0-1033.35
    • 5.3.0-1034.36
    • 5.3.0-1035.37
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-azure Ubuntu:18.04:LTS

    Versions
    • 4.15.0-1002.2
    • 4.15.0-1003.3
    • 4.15.0-1004.4
    • 4.15.0-1008.8
    • 4.15.0-1009.9
    • 4.15.0-1012.12
    • 4.15.0-1013.13
    • 4.15.0-1014.14
    • 4.15.0-1018.18
    • 4.15.0-1019.19
    • 4.15.0-1021.21
    • 4.15.0-1022.23
    • 4.15.0-1023.24
    • 4.15.0-1025.26
    • 4.15.0-1028.29
    • 4.15.0-1030.31
    • 4.15.0-1031.32
    • 4.15.0-1032.33
    • 4.15.0-1035.36
    • 4.15.0-1036.38
    • 4.15.0-1037.39
    • 4.18.0-1011.11~18.04.1
    • 4.18.0-1013.13~18.04.1
    • 4.18.0-1014.14~18.04.1
    • 4.18.0-1018.18~18.04.1
    • 4.18.0-1019.19~18.04.1
    • 4.18.0-1020.20~18.04.1
    • 4.18.0-1023.24~18.04.1
    • 4.18.0-1024.25~18.04.1
    • 4.18.0-1025.27~18.04.1
    • 5.0.0-1014.14~18.04.1
    • 5.0.0-1016.17~18.04.1
    • 5.0.0-1018.19~18.04.1
    • 5.0.0-1020.21~18.04.1
    • 5.0.0-1022.23~18.04.1
    • 5.0.0-1023.24~18.04.1
    • 5.0.0-1025.27~18.04.1
    • 5.0.0-1027.29~18.04.1
    • 5.0.0-1028.30~18.04.1
    • 5.0.0-1029.31~18.04.1
    • 5.0.0-1031.33
    • 5.0.0-1032.34
    • 5.0.0-1035.37
    • 5.0.0-1036.38
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-azure-5.3 Ubuntu:18.04:LTS

    Versions
    • 5.3.0-1007.8~18.04.1
    • 5.3.0-1008.9~18.04.1
    • 5.3.0-1009.10~18.04.1
    • 5.3.0-1010.11~18.04.1
    • 5.3.0-1012.13~18.04.1
    • 5.3.0-1013.14~18.04.1
    • 5.3.0-1016.17~18.04.1
    • 5.3.0-1018.19~18.04.1
    • 5.3.0-1019.20~18.04.1
    • 5.3.0-1020.21~18.04.1
    • 5.3.0-1022.23~18.04.1
    • 5.3.0-1028.29~18.04.1
    • 5.3.0-1031.32~18.04.1
    • 5.3.0-1032.33~18.04.1
    • 5.3.0-1034.35~18.04.1
    • 5.3.0-1035.36
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-azure-edge Ubuntu:18.04:LTS

    Versions
    • 4.18.0-1006.6~18.04.1
    • 4.18.0-1007.7~18.04.1
    • 4.18.0-1008.8~18.04.1
    • 5.0.0-1012.12~18.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-gcp Ubuntu:18.04:LTS

    Versions
    • 4.15.0-1001.1
    • 4.15.0-1003.3
    • 4.15.0-1005.5
    • 4.15.0-1006.6
    • 4.15.0-1008.8
    • 4.15.0-1009.9
    • 4.15.0-1010.10
    • 4.15.0-1014.14
    • 4.15.0-1015.15
    • 4.15.0-1017.18
    • 4.15.0-1018.19
    • 4.15.0-1019.20
    • 4.15.0-1021.22
    • 4.15.0-1023.24
    • 4.15.0-1024.25
    • 4.15.0-1025.26
    • 4.15.0-1026.27
    • 4.15.0-1027.28
    • 4.15.0-1028.29
    • 4.15.0-1029.31
    • 4.15.0-1030.32
    • 4.15.0-1032.34
    • 4.15.0-1033.35
    • 4.15.0-1034.36
    • 4.15.0-1036.38
    • 4.15.0-1037.39
    • 4.15.0-1040.42
    • 4.15.0-1042.45
    • 4.15.0-1044.70
    • 5.0.0-1020.20~18.04.1
    • 5.0.0-1021.21~18.04.1
    • 5.0.0-1025.26~18.04.1
    • 5.0.0-1026.27~18.04.1
    • 5.0.0-1028.29~18.04.1
    • 5.0.0-1029.30~18.04.1
    • 5.0.0-1031.32
    • 5.0.0-1033.34
    • 5.0.0-1034.35
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-gcp-5.3 Ubuntu:18.04:LTS

    Versions
    • 5.3.0-1008.9~18.04.1
    • 5.3.0-1009.10~18.04.1
    • 5.3.0-1010.11~18.04.1
    • 5.3.0-1012.13~18.04.1
    • 5.3.0-1014.15~18.04.1
    • 5.3.0-1016.17~18.04.1
    • 5.3.0-1017.18~18.04.1
    • 5.3.0-1018.19~18.04.1
    • 5.3.0-1020.22~18.04.1
    • 5.3.0-1026.28~18.04.1
    • 5.3.0-1029.31~18.04.1
    • 5.3.0-1030.32~18.04.1
    • 5.3.0-1032.34~18.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-gke-4.15 Ubuntu:18.04:LTS

    Versions
    • 4.15.0-1030.32
    • 4.15.0-1032.34
    • 4.15.0-1033.35
    • 4.15.0-1034.36
    • 4.15.0-1036.38
    • 4.15.0-1037.39
    • 4.15.0-1040.42
    • 4.15.0-1041.43
    • 4.15.0-1042.44
    • 4.15.0-1044.46
    • 4.15.0-1045.48
    • 4.15.0-1046.49
    • 4.15.0-1048.51
    • 4.15.0-1049.52
    • 4.15.0-1050.53
    • 4.15.0-1052.55
    • 4.15.0-1055.58
    • 4.15.0-1057.60
    • 4.15.0-1058.61
    • 4.15.0-1059.62
    • 4.15.0-1063.66
    • 4.15.0-1064.67
    • 4.15.0-1066.69
    • 4.15.0-1067.70
    • 4.15.0-1069.72
    • 4.15.0-1070.73
    • 4.15.0-1072.76
    • 4.15.0-1073.78
    • 4.15.0-1074.79
    • 4.15.0-1076.81
    • 4.15.0-1077.82
    • 4.15.0-1078.83
    • 4.15.0-1079.84
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-gke-5.4 Ubuntu:18.04:LTS

    Versions
    • 5.4.0-1025.25~18.04.1
    • 5.4.0-1027.28~18.04.1
    • 5.4.0-1029.31~18.04.1
    • 5.4.0-1030.32~18.04.1
    • 5.4.0-1032.34~18.04.1
    • 5.4.0-1033.35~18.04.1
    • 5.4.0-1035.37~18.04.1
    • 5.4.0-1036.38~18.04.1
    • 5.4.0-1037.39~18.04.1
    • 5.4.0-1039.41~18.04.1
    • 5.4.0-1040.42~18.04.1
    • 5.4.0-1042.44~18.04.1
    • 5.4.0-1043.45~18.04.1
    • 5.4.0-1044.46~18.04.1
    • 5.4.0-1046.48~18.04.1
    • 5.4.0-1049.52~18.04.1
    • 5.4.0-1051.54~18.04.1
    • 5.4.0-1052.55~18.04.1
    • 5.4.0-1053.56~18.04.1
    • 5.4.0-1054.57~18.04.1
    • 5.4.0-1055.58~18.04.1
    • 5.4.0-1056.59~18.04.1
    • 5.4.0-1057.60~18.04.1
    • 5.4.0-1059.62~18.04.1
    • 5.4.0-1061.64~18.04.1
    • 5.4.0-1062.65~18.04.1
    • 5.4.0-1063.66~18.04.1
    • 5.4.0-1065.68~18.04.1
    • 5.4.0-1066.69~18.04.1
    • 5.4.0-1067.70~18.04.1
    • 5.4.0-1068.71~18.04.1
    • 5.4.0-1071.76~18.04.3
    • 5.4.0-1072.77~18.04.1
    • 5.4.0-1074.79~18.04.1
    • 5.4.0-1076.82~18.04.1
    • 5.4.0-1078.84~18.04.1
    • 5.4.0-1080.86~18.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-gkeop-5.4 Ubuntu:18.04:LTS

    Versions
    • 5.4.0-1001.1
    • 5.4.0-1003.3
    • 5.4.0-1004.5
    • 5.4.0-1005.6
    • 5.4.0-1007.8~18.04.1
    • 5.4.0-1008.9~18.04.1
    • 5.4.0-1009.10~18.04.1
    • 5.4.0-1010.11~18.04.1
    • 5.4.0-1011.12~18.04.2
    • 5.4.0-1012.13~18.04.1
    • 5.4.0-1013.14~18.04.1
    • 5.4.0-1014.15~18.04.1
    • 5.4.0-1015.16~18.04.1
    • 5.4.0-1016.17~18.04.1
    • 5.4.0-1018.19~18.04.1
    • 5.4.0-1021.22~18.04.1
    • 5.4.0-1022.23~18.04.1
    • 5.4.0-1023.24~18.04.1
    • 5.4.0-1024.25~18.04.1
    • 5.4.0-1025.26~18.04.1
    • 5.4.0-1026.27~18.04.1
    • 5.4.0-1027.28~18.04.1
    • 5.4.0-1029.30~18.04.2
    • 5.4.0-1031.32~18.04.1
    • 5.4.0-1032.33~18.04.1
    • 5.4.0-1033.34~18.04.1
    • 5.4.0-1034.35~18.04.1
    • 5.4.0-1036.37~18.04.1
    • 5.4.0-1037.38~18.04.1
    • 5.4.0-1038.39~18.04.1
    • 5.4.0-1039.40~18.04.1
    • 5.4.0-1040.41~18.04.1
    • 5.4.0-1043.44~18.04.1
    • 5.4.0-1046.48~18.04.1
    • 5.4.0-1048.51~18.04.1
    • 5.4.0-1049.52~18.04.1
    • 5.4.0-1051.54~18.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-hwe Ubuntu:18.04:LTS

    Versions
    • 4.18.0-13.14~18.04.1
    • 4.18.0-14.15~18.04.1
    • 4.18.0-15.16~18.04.1
    • 4.18.0-16.17~18.04.1
    • 4.18.0-17.18~18.04.1
    • 4.18.0-18.19~18.04.1
    • 4.18.0-20.21~18.04.1
    • 4.18.0-21.22~18.04.1
    • 4.18.0-22.23~18.04.1
    • 4.18.0-24.25~18.04.1
    • 4.18.0-25.26~18.04.1
    • 5.0.0-23.24~18.04.1
    • 5.0.0-25.26~18.04.1
    • 5.0.0-27.28~18.04.1
    • 5.0.0-29.31~18.04.1
    • 5.0.0-31.33~18.04.1
    • 5.0.0-32.34~18.04.2
    • 5.0.0-35.38~18.04.1
    • 5.0.0-36.39~18.04.1
    • 5.0.0-37.40~18.04.1
    • 5.3.0-26.28~18.04.1
    • 5.3.0-28.30~18.04.1
    • 5.3.0-40.32~18.04.1
    • 5.3.0-42.34~18.04.1
    • 5.3.0-45.37~18.04.1
    • 5.3.0-46.38~18.04.1
    • 5.3.0-51.44~18.04.2
    • 5.3.0-53.47~18.04.1
    • 5.3.0-59.53~18.04.1
    • 5.3.0-61.55~18.04.1
    • 5.3.0-62.56~18.04.1
    • 5.3.0-64.58~18.04.1
    • 5.3.0-65.59
    • 5.3.0-66.60
    • 5.3.0-67.61
    • 5.3.0-68.63
    • 5.3.0-69.65
    • 5.3.0-70.66
    • 5.3.0-72.68
    • 5.3.0-73.69
    • 5.3.0-74.70
    • 5.3.0-75.71
    • 5.3.0-76.72
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-hwe-edge Ubuntu:18.04:LTS

    Versions
    • 5.0.0-15.16~18.04.1
    • 5.0.0-16.17~18.04.1
    • 5.0.0-17.18~18.04.1
    • 5.0.0-19.20~18.04.1
    • 5.0.0-20.21~18.04.1
    • 5.3.0-19.20~18.04.2
    • 5.3.0-22.24~18.04.1
    • 5.3.0-23.25~18.04.1
    • 5.3.0-23.25~18.04.2
    • 5.3.0-24.26~18.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-oem Ubuntu:18.04:LTS

    Versions
    • 4.15.0-1002.3
    • 4.15.0-1004.5
    • 4.15.0-1006.9
    • 4.15.0-1008.11
    • 4.15.0-1009.12
    • 4.15.0-1012.15
    • 4.15.0-1013.16
    • 4.15.0-1015.18
    • 4.15.0-1017.20
    • 4.15.0-1018.21
    • 4.15.0-1021.24
    • 4.15.0-1024.29
    • 4.15.0-1026.31
    • 4.15.0-1028.33
    • 4.15.0-1030.35
    • 4.15.0-1033.38
    • 4.15.0-1034.39
    • 4.15.0-1035.40
    • 4.15.0-1036.41
    • 4.15.0-1038.43
    • 4.15.0-1039.44
    • 4.15.0-1043.48
    • 4.15.0-1045.50
    • 4.15.0-1050.57
    • 4.15.0-1056.65
    • 4.15.0-1057.66
    • 4.15.0-1059.68
    • 4.15.0-1063.72
    • 4.15.0-1064.73
    • 4.15.0-1065.75
    • 4.15.0-1066.76
    • 4.15.0-1067.77
    • 4.15.0-1069.79
    • 4.15.0-1073.83
    • 4.15.0-1076.86
    • 4.15.0-1079.89
    • 4.15.0-1080.90
    • 4.15.0-1081.91
    • 4.15.0-1087.97
    • 4.15.0-1090.100
    • 4.15.0-1091.101
    • 4.15.0-1093.103
    • 4.15.0-1094.104
    • 4.15.0-1096.106
    • 4.15.0-1097.107
    • 4.15.0-1099.109
    • 4.15.0-1100.110
    • 4.15.0-1101.112
    • 4.15.0-1102.113
    • 4.15.0-1103.114
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-oracle-5.0 Ubuntu:18.04:LTS

    Versions
    • 5.0.0-1007.12~18.04.1
    • 5.0.0-1008.13~18.04.1
    • 5.0.0-1009.14~18.04.1
    • 5.0.0-1010.15~18.04.1
    • 5.0.0-1011.16
    • 5.0.0-1013.18
    • 5.0.0-1014.19
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-oracle-5.3 Ubuntu:18.04:LTS

    Versions
    • 5.3.0-1011.12~18.04.1
    • 5.3.0-1013.14~18.04.1
    • 5.3.0-1014.15~18.04.1
    • 5.3.0-1016.18~18.04.1
    • 5.3.0-1018.20~18.04.1
    • 5.3.0-1024.26~18.04.1
    • 5.3.0-1027.29~18.04.1
    • 5.3.0-1028.30~18.04.1
    • 5.3.0-1030.32~18.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • linux-aws-5.15 Ubuntu:20.04:LTS

    Versions
    • 5.15.0-1014.18~20.04.1
    • 5.15.0-1015.19~20.04.1
    • 5.15.0-1017.21~20.04.1
    Affected ranges
    • ECOSYSTEM: < 5.15.0-1019.23~20.04.1

    Update to 5.15.0-1019.23~20.04.1

  • linux-azure-5.15 Ubuntu:20.04:LTS

    Versions
    • 5.15.0-1007.8~20.04.1
    • 5.15.0-1008.9~20.04.1
    • 5.15.0-1013.16~20.04.1
    • 5.15.0-1014.17~20.04.1
    • 5.15.0-1017.20~20.04.1
    Affected ranges
    • ECOSYSTEM: < 5.15.0-1019.24~20.04.1

    Update to 5.15.0-1019.24~20.04.1

  • linux-gcp-5.15 Ubuntu:20.04:LTS

    Versions
    • 5.15.0-1006.9~20.04.1
    • 5.15.0-1012.17~20.04.1
    • 5.15.0-1013.18~20.04.1
    • 5.15.0-1016.21~20.04.1
    Affected ranges
    • ECOSYSTEM: < 5.15.0-1017.23~20.04.2

    Update to 5.15.0-1017.23~20.04.2

Original sources

Check your server →