usn-8548-1
Vulnerability from osv_ubuntu
Published
2026-07-15 12:07
Modified
2026-07-15 12:07
Summary
linux-aws, linux-fips, linux-lts-xenial vulnerabilities
Details

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503)

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: - SCSI subsystem; - Thermal drivers; - USB over IP driver; - File systems infrastructure; - Ext4 file system; - Network file system (NFS) server daemon; - SMB network file system; - Tracing infrastructure; - B.A.T.M.A.N. meshing protocol; - Ceph Core library; - DCCP (Datagram Congestion Control Protocol); - IPv4 networking; - IPv6 networking; - Netfilter; - RxRPC session sockets; - X.25 network layer; (CVE-2021-47117, CVE-2021-47202, CVE-2023-52646, CVE-2024-56643, CVE-2026-23455, CVE-2026-31402, CVE-2026-31607, CVE-2026-31637, CVE-2026-31659, CVE-2026-31685, CVE-2026-43011, CVE-2026-43037, CVE-2026-43038, CVE-2026-43383, CVE-2026-43407, CVE-2026-43414, CVE-2026-45988, CVE-2026-46119, CVE-2026-46243)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-47117",
              "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-2021-47202",
              "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-2023-52646",
              "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-2024-56643",
              "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": "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-2026-23455",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31402",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31607",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31637",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31659",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31685",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43011",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43037",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43038",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43383",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43407",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43414",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43503",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/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:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-45988",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-46119",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-46243",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-aws-cloud-tools-4.4.0-1156",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-aws-headers-4.4.0-1156",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-aws-tools-4.4.0-1156",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-buildinfo-4.4.0-1156-aws",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-cloud-tools-4.4.0-1156-aws",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-headers-4.4.0-1156-aws",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-image-4.4.0-1156-aws",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-modules-4.4.0-1156-aws",
            "binary_version": "4.4.0-1156.162"
          },
          {
            "binary_name": "linux-tools-4.4.0-1156-aws",
            "binary_version": "4.4.0-1156.162"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "linux-aws",
        "purl": "pkg:deb/ubuntu/linux-aws@4.4.0-1156.162?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.4.0-1156.162"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.0-1002.2",
        "4.4.0-1003.3",
        "4.4.0-1005.5",
        "4.4.0-1006.6",
        "4.4.0-1009.9",
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        "4.4.0-1155.161"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-47117",
              "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-2021-47202",
              "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-2023-52646",
              "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-2024-56643",
              "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": "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-2026-23455",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31402",
              "severity": [
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                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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              "id": "CVE-2026-31607",
              "severity": [
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                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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                  "type": "CVSS_V3"
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        "4.4.0-142.168~14.04.1",
        "4.4.0-143.169~14.04.2",
        "4.4.0-144.170~14.04.1",
        "4.4.0-146.172~14.04.1",
        "4.4.0-148.174~14.04.1",
        "4.4.0-150.176~14.04.1",
        "4.4.0-151.178~14.04.1",
        "4.4.0-154.181~14.04.1",
        "4.4.0-157.185~14.04.1",
        "4.4.0-159.187~14.04.1",
        "4.4.0-161.189~14.04.1",
        "4.4.0-164.192~14.04.1",
        "4.4.0-165.193~14.04.1",
        "4.4.0-166.195~14.04.1",
        "4.4.0-168.197~14.04.1",
        "4.4.0-169.198~14.04.1",
        "4.4.0-170.199~14.04.1",
        "4.4.0-171.200~14.04.1",
        "4.4.0-173.203~14.04.1",
        "4.4.0-174.204~14.04.1",
        "4.4.0-176.206~14.04.1",
        "4.4.0-177.207~14.04.1",
        "4.4.0-178.208~14.04.1",
        "4.4.0-179.209~14.04.1",
        "4.4.0-184.214~14.04.1",
        "4.4.0-185.215~14.04.1",
        "4.4.0-186.216~14.04.1",
        "4.4.0-187.217~14.04.1",
        "4.4.0-189.219~14.04.1",
        "4.4.0-190.220~14.04.1",
        "4.4.0-193.224~14.04.1",
        "4.4.0-194.226~14.04.1",
        "4.4.0-197.229~14.04.1",
        "4.4.0-198.230~14.04.1",
        "4.4.0-200.232~14.04.1",
        "4.4.0-201.233~14.04.1",
        "4.4.0-203.235~14.04.1",
        "4.4.0-204.236~14.04.1",
        "4.4.0-206.238~14.04.1",
        "4.4.0-208.240~14.04.1",
        "4.4.0-209.241~14.04.1",
        "4.4.0-210.242~14.04.1",
        "4.4.0-211.243~14.04.1",
        "4.4.0-212.244~14.04.1",
        "4.4.0-213.245~14.04.1",
        "4.4.0-214.246~14.04.1",
        "4.4.0-215.247~14.04.1",
        "4.4.0-218.251~14.04.1",
        "4.4.0-219.252~14.04.1",
        "4.4.0-221.254~14.04.1",
        "4.4.0-222.255~14.04.1",
        "4.4.0-223.256~14.04.1",
        "4.4.0-224.257~14.04.1",
        "4.4.0-227.261~14.04.1",
        "4.4.0-229.263~14.04.1",
        "4.4.0-230.264~14.04.1",
        "4.4.0-231.265~14.04.1",
        "4.4.0-233.267~14.04.1",
        "4.4.0-234.268~14.04.1",
        "4.4.0-235.269~14.04.1",
        "4.4.0-236.270~14.04.1",
        "4.4.0-237.271~14.04.1",
        "4.4.0-239.273~14.04.1",
        "4.4.0-240.274~14.04.1",
        "4.4.0-241.275~14.04.1",
        "4.4.0-242.276~14.04.1",
        "4.4.0-243.277~14.04.1",
        "4.4.0-244.278~14.04.1",
        "4.4.0-245.279~14.04.1",
        "4.4.0-246.280~14.04.1",
        "4.4.0-248.282~14.04.1",
        "4.4.0-250.284~14.04.1",
        "4.4.0-251.285~14.04.1",
        "4.4.0-252.286~14.04.1",
        "4.4.0-253.287~14.04.1",
        "4.4.0-254.288~14.04.1",
        "4.4.0-256.290~14.04.1",
        "4.4.0-257.291~14.04.1",
        "4.4.0-258.292~14.04.2",
        "4.4.0-259.293~14.04.1",
        "4.4.0-260.294~14.04.1",
        "4.4.0-261.295~14.04.1",
        "4.4.0-262.296~14.04.1",
        "4.4.0-263.297~14.04.1",
        "4.4.0-264.298~14.04.1",
        "4.4.0-266.300~14.04.1",
        "4.4.0-267.301~14.04.1",
        "4.4.0-268.302~14.04.1",
        "4.4.0-269.303~14.04.1",
        "4.4.0-270.304~14.04.1",
        "4.4.0-271.305~14.04.1",
        "4.4.0-272.306~14.04.1",
        "4.4.0-273.307~14.04.1",
        "4.4.0-274.308~14.04.1",
        "4.4.0-276.310~14.04.1",
        "4.4.0-277.311~14.04.1",
        "4.4.0-278.312~14.04.1",
        "4.4.0-279.313~14.04.1",
        "4.4.0-280.314~14.04.1",
        "4.4.0-281.315~14.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-47117",
              "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-2021-47202",
              "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-2023-52646",
              "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-2024-56643",
              "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": "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-2026-23455",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31402",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31607",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31637",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31659",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-31685",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43011",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43037",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-43038",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "critical",
                  "type": "Ubuntu"
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              ]
            },
            {
              "id": "CVE-2026-43383",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
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            },
            {
              "id": "CVE-2026-43407",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
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            },
            {
              "id": "CVE-2026-43414",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
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            {
              "id": "CVE-2026-43503",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/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:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
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            },
            {
              "id": "CVE-2026-45988",
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                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
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                {
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                  "type": "CVSS_V3"
                },
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                },
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            {
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            "binary_version": "4.4.0-1126.133"
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            "binary_version": "4.4.0-1126.133"
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          {
            "binary_name": "nic-pcmcia-modules-4.4.0-1126-fips-di",
            "binary_version": "4.4.0-1126.133"
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          {
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            "binary_version": "4.4.0-1126.133"
          },
          {
            "binary_name": "nic-usb-modules-4.4.0-1126-fips-di",
            "binary_version": "4.4.0-1126.133"
          },
          {
            "binary_name": "parport-modules-4.4.0-1126-fips-di",
            "binary_version": "4.4.0-1126.133"
          },
          {
            "binary_name": "pata-modules-4.4.0-1126-fips-di",
            "binary_version": "4.4.0-1126.133"
          },
          {
            "binary_name": "pcmcia-modules-4.4.0-1126-fips-di",
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          {
            "binary_name": "pcmcia-storage-modules-4.4.0-1126-fips-di",
            "binary_version": "4.4.0-1126.133"
          },
          {
            "binary_name": "plip-modules-4.4.0-1126-fips-di",
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          {
            "binary_name": "scsi-modules-4.4.0-1126-fips-di",
            "binary_version": "4.4.0-1126.133"
          },
          {
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            "binary_version": "4.4.0-1126.133"
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      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS:16.04:LTS",
        "name": "linux-fips",
        "purl": "pkg:deb/ubuntu/linux-fips@4.4.0-1126.133?arch=source\u0026distro=fips-updates/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.4.0-1126.133"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.0-1003.3",
        "4.4.0-1005.5",
        "4.4.0-1006.6",
        "4.4.0-1008.10",
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        "4.4.0-1111.118",
        "4.4.0-1112.119",
        "4.4.0-1113.120",
        "4.4.0-1114.121",
        "4.4.0-1115.122",
        "4.4.0-1116.123",
        "4.4.0-1117.124",
        "4.4.0-1119.126",
        "4.4.0-1120.127",
        "4.4.0-1121.128",
        "4.4.0-1122.129",
        "4.4.0-1123.130",
        "4.4.0-1124.131",
        "4.4.0-1125.132"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that a logic flaw existed in the XFRM ESP-in-TCP\nsubsystem in the Linux kernel when handling socket buffer fragments. This\nflaw is known as Fragnesia. A local attacker could use this to escalate\nprivileges, or possibly escape a container. (CVE-2026-43503)\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  - SCSI subsystem;\n  - Thermal drivers;\n  - USB over IP driver;\n  - File systems infrastructure;\n  - Ext4 file system;\n  - Network file system (NFS) server daemon;\n  - SMB network file system;\n  - Tracing infrastructure;\n  - B.A.T.M.A.N. meshing protocol;\n  - Ceph Core library;\n  - DCCP (Datagram Congestion Control Protocol);\n  - IPv4 networking;\n  - IPv6 networking;\n  - Netfilter;\n  - RxRPC session sockets;\n  - X.25 network layer;\n(CVE-2021-47117, CVE-2021-47202, CVE-2023-52646, CVE-2024-56643,\nCVE-2026-23455, CVE-2026-31402, CVE-2026-31607, CVE-2026-31637,\nCVE-2026-31659, CVE-2026-31685, CVE-2026-43011, CVE-2026-43037,\nCVE-2026-43038, CVE-2026-43383, CVE-2026-43407, CVE-2026-43414,\nCVE-2026-45988, CVE-2026-46119, CVE-2026-46243)\n",
  "id": "USN-8548-1",
  "modified": "2026-07-15T12:07:51Z",
  "published": "2026-07-15T12:07:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8548-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47117"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-47202"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-52646"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-56643"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-23455"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31402"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31607"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31637"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31659"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31685"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43011"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43037"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43038"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43383"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43407"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43414"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43503"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-45988"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-46119"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-46243"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-aws, linux-fips, linux-lts-xenial vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-47117",
    "UBUNTU-CVE-2021-47202",
    "UBUNTU-CVE-2023-52646",
    "UBUNTU-CVE-2024-56643",
    "UBUNTU-CVE-2026-23455",
    "UBUNTU-CVE-2026-31402",
    "UBUNTU-CVE-2026-31607",
    "UBUNTU-CVE-2026-31637",
    "UBUNTU-CVE-2026-31659",
    "UBUNTU-CVE-2026-31685",
    "UBUNTU-CVE-2026-43011",
    "UBUNTU-CVE-2026-43037",
    "UBUNTU-CVE-2026-43038",
    "UBUNTU-CVE-2026-43383",
    "UBUNTU-CVE-2026-43407",
    "UBUNTU-CVE-2026-43414",
    "UBUNTU-CVE-2026-43503",
    "UBUNTU-CVE-2026-45988",
    "UBUNTU-CVE-2026-46119",
    "UBUNTU-CVE-2026-46243"
  ]
}



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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.