usn-7939-1
Vulnerability from osv_ubuntu
Published
2025-12-16 20:58
Modified
2026-06-03 10:46
Summary
linux-azure, linux-azure-5.4 vulnerabilities
Details

Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this to expose sensitive information from the host OS. (CVE-2025-40300)

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - ACPI drivers; - HSI subsystem; - I3C subsystem; - InfiniBand drivers; - Media drivers; - Network drivers; - Pin controllers subsystem; - AFS file system; - F2FS file system; - SMB network file system; - Padata parallel execution mechanism; - Timer subsystem; - Tracing infrastructure; - Memory management; - Appletalk network protocol; - Networking core; - Netfilter; (CVE-2022-49026, CVE-2022-49390, CVE-2023-52854, CVE-2024-35867, CVE-2024-47691, CVE-2024-49935, CVE-2024-50061, CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090, CVE-2024-53218, CVE-2024-56664, CVE-2025-21727, CVE-2025-21855, CVE-2025-37838, CVE-2025-37958, CVE-2025-38352, CVE-2025-38666, CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-49026",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-49390",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-52854",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-35867",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-47691",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-49935",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50061",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50067",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50095",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50196",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-53090",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-53218",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-56664",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-21727",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-21855",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-37838",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-37958",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-38352",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-38666",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-39964",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-39993",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-40018",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-40300",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-azure-5.4-cloud-tools-5.4.0-1156",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-azure-5.4-headers-5.4.0-1156",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-azure-5.4-tools-5.4.0-1156",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-buildinfo-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-headers-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-modules-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-modules-extra-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163~18.04.1"
          },
          {
            "binary_name": "linux-tools-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "linux-azure-5.4",
        "purl": "pkg:deb/ubuntu/linux-azure-5.4@5.4.0-1156.163~18.04.1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1156.163~18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1020.20~18.04.1",
        "5.4.0-1022.22~18.04.1",
        "5.4.0-1023.23~18.04.1",
        "5.4.0-1025.25~18.04.1",
        "5.4.0-1026.26~18.04.1",
        "5.4.0-1031.32~18.04.1",
        "5.4.0-1032.33~18.04.1",
        "5.4.0-1034.35~18.04.1",
        "5.4.0-1035.36~18.04.1",
        "5.4.0-1036.38~18.04.1",
        "5.4.0-1039.41~18.04.1",
        "5.4.0-1040.42~18.04.1",
        "5.4.0-1041.43~18.04.1",
        "5.4.0-1043.45~18.04.1",
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        "5.4.0-1046.48~18.04.1",
        "5.4.0-1047.49~18.04.1",
        "5.4.0-1048.50~18.04.1",
        "5.4.0-1049.51~18.04.1",
        "5.4.0-1051.53~18.04.1",
        "5.4.0-1055.57~18.04.1",
        "5.4.0-1056.58~18.04.1",
        "5.4.0-1058.60~18.04.1",
        "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",
        "5.4.0-1064.67~18.04.1",
        "5.4.0-1065.68~18.04.1",
        "5.4.0-1067.70~18.04.1",
        "5.4.0-1068.71~18.04.1",
        "5.4.0-1069.72~18.04.1",
        "5.4.0-1070.73~18.04.1",
        "5.4.0-1072.75~18.04.1",
        "5.4.0-1073.76~18.04.1",
        "5.4.0-1074.77~18.04.1",
        "5.4.0-1077.80~18.04.1",
        "5.4.0-1078.81~18.04.1",
        "5.4.0-1080.83~18.04.2",
        "5.4.0-1083.87~18.04.1",
        "5.4.0-1085.90~18.04.1",
        "5.4.0-1086.91~18.04.1",
        "5.4.0-1089.94~18.04.1",
        "5.4.0-1090.95~18.04.1",
        "5.4.0-1091.96~18.04.1",
        "5.4.0-1094.100~18.04.1",
        "5.4.0-1095.101~18.04.1",
        "5.4.0-1098.104~18.04.2",
        "5.4.0-1100.106~18.04.1",
        "5.4.0-1101.107~18.04.1",
        "5.4.0-1103.109~18.04.1",
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        "5.4.0-1109.115~18.04.1",
        "5.4.0-1110.116~18.04.1",
        "5.4.0-1111.117~18.04.1",
        "5.4.0-1112.118~18.04.1",
        "5.4.0-1113.119~18.04.1",
        "5.4.0-1115.122~18.04.1",
        "5.4.0-1116.123~18.04.1",
        "5.4.0-1117.124~18.04.1",
        "5.4.0-1118.125~18.04.1",
        "5.4.0-1119.126~18.04.2",
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        "5.4.0-1135.142~18.04.1",
        "5.4.0-1136.143~18.04.1",
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        "5.4.0-1138.145~18.04.1",
        "5.4.0-1139.146~18.04.1",
        "5.4.0-1140.147~18.04.1",
        "5.4.0-1142.149~18.04.1",
        "5.4.0-1143.150~18.04.1",
        "5.4.0-1145.152~18.04.1",
        "5.4.0-1147.154~18.04.1",
        "5.4.0-1148.155~18.04.1",
        "5.4.0-1149.156~18.04.1",
        "5.4.0-1150.157~18.04.1",
        "5.4.0-1151.158~18.04.1",
        "5.4.0-1152.159~18.04.1",
        "5.4.0-1153.160~18.04.1",
        "5.4.0-1154.161~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-49026",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-49390",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-52854",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-35867",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-47691",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-49935",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50061",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50067",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50095",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-50196",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-53090",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-53218",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-56664",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-21727",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-21855",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-37838",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-37958",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-38352",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-38666",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-39964",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-39993",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-40018",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-40300",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-azure-cloud-tools-5.4.0-1156",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-azure-headers-5.4.0-1156",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-azure-tools-5.4.0-1156",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-buildinfo-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-cloud-tools-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-headers-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-image-unsigned-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-modules-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-modules-extra-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163"
          },
          {
            "binary_name": "linux-tools-5.4.0-1156-azure",
            "binary_version": "5.4.0-1156.163"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "linux-azure",
        "purl": "pkg:deb/ubuntu/linux-azure@5.4.0-1156.163?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1156.163"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-1003.3",
        "5.3.0-1008.9",
        "5.3.0-1009.10",
        "5.4.0-1006.6",
        "5.4.0-1008.8",
        "5.4.0-1009.9",
        "5.4.0-1010.10",
        "5.4.0-1012.12",
        "5.4.0-1016.16",
        "5.4.0-1019.19",
        "5.4.0-1020.20",
        "5.4.0-1022.22",
        "5.4.0-1023.23",
        "5.4.0-1025.25",
        "5.4.0-1026.26",
        "5.4.0-1031.32",
        "5.4.0-1032.33",
        "5.4.0-1034.35",
        "5.4.0-1035.36",
        "5.4.0-1036.38",
        "5.4.0-1039.41",
        "5.4.0-1040.42",
        "5.4.0-1041.43",
        "5.4.0-1043.45",
        "5.4.0-1044.46",
        "5.4.0-1046.48",
        "5.4.0-1047.49",
        "5.4.0-1048.50",
        "5.4.0-1049.51",
        "5.4.0-1051.53",
        "5.4.0-1055.57",
        "5.4.0-1056.58",
        "5.4.0-1058.60",
        "5.4.0-1059.62",
        "5.4.0-1061.64",
        "5.4.0-1062.65",
        "5.4.0-1063.66",
        "5.4.0-1064.67",
        "5.4.0-1065.68",
        "5.4.0-1067.70",
        "5.4.0-1068.71",
        "5.4.0-1069.72",
        "5.4.0-1070.73",
        "5.4.0-1072.75",
        "5.4.0-1073.76",
        "5.4.0-1074.77",
        "5.4.0-1077.80",
        "5.4.0-1078.81",
        "5.4.0-1080.83",
        "5.4.0-1083.87",
        "5.4.0-1085.90",
        "5.4.0-1086.91",
        "5.4.0-1089.94",
        "5.4.0-1090.95",
        "5.4.0-1091.96",
        "5.4.0-1094.100",
        "5.4.0-1095.101",
        "5.4.0-1098.104",
        "5.4.0-1100.106",
        "5.4.0-1101.107",
        "5.4.0-1103.109",
        "5.4.0-1104.110",
        "5.4.0-1105.111",
        "5.4.0-1106.112",
        "5.4.0-1107.113",
        "5.4.0-1108.114",
        "5.4.0-1109.115",
        "5.4.0-1110.116",
        "5.4.0-1111.117",
        "5.4.0-1112.118",
        "5.4.0-1113.119",
        "5.4.0-1114.120",
        "5.4.0-1115.122",
        "5.4.0-1116.123",
        "5.4.0-1117.124",
        "5.4.0-1118.125",
        "5.4.0-1119.126",
        "5.4.0-1120.127",
        "5.4.0-1121.128",
        "5.4.0-1122.129",
        "5.4.0-1123.130",
        "5.4.0-1124.131",
        "5.4.0-1126.133",
        "5.4.0-1127.134",
        "5.4.0-1128.135",
        "5.4.0-1129.136",
        "5.4.0-1130.137",
        "5.4.0-1131.138",
        "5.4.0-1132.139",
        "5.4.0-1133.140",
        "5.4.0-1134.141",
        "5.4.0-1135.142",
        "5.4.0-1136.143",
        "5.4.0-1137.144",
        "5.4.0-1138.145",
        "5.4.0-1139.146",
        "5.4.0-1140.147",
        "5.4.0-1142.149",
        "5.4.0-1143.150",
        "5.4.0-1145.152",
        "5.4.0-1147.154",
        "5.4.0-1148.155",
        "5.4.0-1149.156",
        "5.4.0-1150.157",
        "5.4.0-1151.158",
        "5.4.0-1152.159",
        "5.4.0-1153.160",
        "5.4.0-1154.161"
      ]
    }
  ],
  "aliases": [],
  "details": "Jean-Claude Graf, Sandro R\u00fcegge, Ali Hajiabadi, and Kaveh Razavi discovered\nthat the Linux kernel contained insufficient branch predictor isolation\nbetween a guest and a userspace hypervisor for certain processors. This\nflaw is known as VMSCAPE. An attacker in a guest VM could possibly use this\nto expose sensitive information from the host OS. (CVE-2025-40300)\n\nSeveral security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Cryptographic API;\n  - ACPI drivers;\n  - HSI subsystem;\n  - I3C subsystem;\n  - InfiniBand drivers;\n  - Media drivers;\n  - Network drivers;\n  - Pin controllers subsystem;\n  - AFS file system;\n  - F2FS file system;\n  - SMB network file system;\n  - Padata parallel execution mechanism;\n  - Timer subsystem;\n  - Tracing infrastructure;\n  - Memory management;\n  - Appletalk network protocol;\n  - Networking core;\n  - Netfilter;\n(CVE-2022-49026, CVE-2022-49390, CVE-2023-52854, CVE-2024-35867,\nCVE-2024-47691, CVE-2024-49935, CVE-2024-50061, CVE-2024-50067,\nCVE-2024-50095, CVE-2024-50196, CVE-2024-53090, CVE-2024-53218,\nCVE-2024-56664, CVE-2025-21727, CVE-2025-21855, CVE-2025-37838,\nCVE-2025-37958, CVE-2025-38352, CVE-2025-38666, CVE-2025-39964,\nCVE-2025-39993, CVE-2025-40018)\n",
  "id": "USN-7939-1",
  "modified": "2026-06-03T10:46:17Z",
  "published": "2025-12-16T20:58:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7939-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-49026"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-49390"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-52854"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-35867"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-47691"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-49935"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-50061"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-50067"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-50095"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-50196"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-53090"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-53218"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-56664"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-21727"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-21855"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-37838"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-37958"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-38352"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-38666"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-39964"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-39993"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-40018"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-40300"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-azure, linux-azure-5.4 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2022-49026",
    "UBUNTU-CVE-2022-49390",
    "UBUNTU-CVE-2023-52854",
    "UBUNTU-CVE-2024-35867",
    "UBUNTU-CVE-2024-47691",
    "UBUNTU-CVE-2024-49935",
    "UBUNTU-CVE-2024-50061",
    "UBUNTU-CVE-2024-50067",
    "UBUNTU-CVE-2024-50095",
    "UBUNTU-CVE-2024-50196",
    "UBUNTU-CVE-2024-53090",
    "UBUNTU-CVE-2024-53218",
    "UBUNTU-CVE-2024-56664",
    "UBUNTU-CVE-2025-21727",
    "UBUNTU-CVE-2025-21855",
    "UBUNTU-CVE-2025-37838",
    "UBUNTU-CVE-2025-37958",
    "UBUNTU-CVE-2025-38352",
    "UBUNTU-CVE-2025-38666",
    "UBUNTU-CVE-2025-39964",
    "UBUNTU-CVE-2025-39993",
    "UBUNTU-CVE-2025-40018",
    "UBUNTU-CVE-2025-40300"
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.