usn-8628-1
Vulnerability from osv_ubuntu
Published
2026-08-12 19:13
Modified
2026-08-13 16:52
Summary
libgit2 vulnerabilities
Details

It was discovered that libgit2 incorrectly handled the Git Smart Protocol. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-10128)

It was discovered that libgit2 incorrectly handled empty packet lines in the Git Smart Protocol. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-10129)

It was discovered that libgit2 incorrectly handled error reporting in the HTTP transport. A remote attacker could possibly use this issue to spoof servers. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-10130)

It was discovered that libgit2 incorrectly handled certain crafted "ng" packets. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2018-15501)

Krishna Ram Prakash R and Vivek Parikh discovered that libgit2 incorrectly handled certain repository index files. A local attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-8098)

Krishna Ram Prakash R and Vivek Parikh discovered that libgit2 incorrectly handled certain repository index files. A local attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2018-8099)

Michał Majchrowicz and Marcin Wyczechowski discovered that libgit2 incorrectly handled submodule paths. A remote attacker could possibly use this issue to write files outside the working tree. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-53584)

Michał Majchrowicz and Marcin Wyczechowski discovered that libgit2 incorrectly handled delta object result-size headers. A remote attacker could possibly use this issue to cause libgit2 to consume excessive memory, leading to a denial of service. (CVE-2026-53585)

Thai Son Dinh discovered that libgit2 incorrectly handled HTTP redirects. A remote attacker could possibly use this issue to leak credentials to an offsite redirect target. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-53586)

It was discovered that libgit2 incorrectly handled certain capability buffers in the smart protocol. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-53587)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-10128",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-10129",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-8099",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-15501",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53585",
              "severity": [
                {
                  "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": "libgit2-0",
            "binary_version": "0.19.0-2ubuntu0.4+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libgit2",
        "purl": "pkg:deb/ubuntu/libgit2@0.19.0-2ubuntu0.4+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.19.0-2ubuntu0.4+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.19.0-2",
        "0.19.0-2ubuntu0.4",
        "0.19.0-2ubuntu0.4+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-10128",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-10129",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-10130",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-8099",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-15501",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53585",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libgit2-24",
            "binary_version": "0.24.1-2ubuntu0.2+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libgit2",
        "purl": "pkg:deb/ubuntu/libgit2@0.24.1-2ubuntu0.2+esm3?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.24.1-2ubuntu0.2+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.22.2-2",
        "0.23.1-1",
        "0.24.1-2",
        "0.24.1-2ubuntu0.2",
        "0.24.1-2ubuntu0.2+esm1",
        "0.24.1-2ubuntu0.2+esm2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-8098",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-8099",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-15501",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53585",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libgit2-26",
            "binary_version": "0.26.0+dfsg.1-1.1ubuntu0.2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libgit2",
        "purl": "pkg:deb/ubuntu/libgit2@0.26.0+dfsg.1-1.1ubuntu0.2+esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.26.0+dfsg.1-1.1ubuntu0.2+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.25.1+really0.24.6-1",
        "0.26.0+dfsg.1-1.1",
        "0.26.0+dfsg.1-1.1build1",
        "0.26.0+dfsg.1-1.1ubuntu0.2",
        "0.26.0+dfsg.1-1.1ubuntu0.2+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-53584",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53585",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53586",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libgit2-28",
            "binary_version": "0.28.4+dfsg.1-2ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libgit2",
        "purl": "pkg:deb/ubuntu/libgit2@0.28.4+dfsg.1-2ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.28.4+dfsg.1-2ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.27.7+dfsg.1-0.2build1",
        "0.28.3+dfsg.1-1",
        "0.28.3+dfsg.1-1ubuntu1",
        "0.28.4+dfsg.1-2",
        "0.28.4+dfsg.1-2ubuntu0.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-53584",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53585",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53586",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libgit2-1.1",
            "binary_version": "1.1.0+dfsg.1-4.1ubuntu0.1+esm1"
          },
          {
            "binary_name": "libgit2-fixtures",
            "binary_version": "1.1.0+dfsg.1-4.1ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "libgit2",
        "purl": "pkg:deb/ubuntu/libgit2@1.1.0+dfsg.1-4.1ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0+dfsg.1-4.1ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0+dfsg.1-4",
        "1.1.0+dfsg.1-4.1",
        "1.1.0+dfsg.1-4.1build1",
        "1.1.0+dfsg.1-4.1ubuntu0.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-53584",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53585",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53586",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53587",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libgit2-1.7",
            "binary_version": "1.7.2+ds-1ubuntu3.1"
          },
          {
            "binary_name": "libgit2-fixtures",
            "binary_version": "1.7.2+ds-1ubuntu3.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libgit2",
        "purl": "pkg:deb/ubuntu/libgit2@1.7.2+ds-1ubuntu3.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.2+ds-1ubuntu3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.5.1+ds-1ubuntu1",
        "1.7.1+ds-2ubuntu1",
        "1.7.2+ds-1ubuntu1",
        "1.7.2+ds-1ubuntu2",
        "1.7.2+ds-1ubuntu3"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-53584",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53585",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53586",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53587",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libgit2-1.9",
            "binary_version": "1.9.1+ds-1ubuntu1.1"
          },
          {
            "binary_name": "libgit2-fixtures",
            "binary_version": "1.9.1+ds-1ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libgit2",
        "purl": "pkg:deb/ubuntu/libgit2@1.9.1+ds-1ubuntu1.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.1+ds-1ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9.0+ds-2ubuntu2",
        "1.9.1+ds-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that libgit2 incorrectly handled the Git Smart Protocol.\nA remote attacker could possibly use this issue to cause a denial of\nservice or execute arbitrary code. This issue only affected Ubuntu 14.04\nLTS and Ubuntu 16.04 LTS. (CVE-2016-10128)\n\nIt was discovered that libgit2 incorrectly handled empty packet lines in\nthe Git Smart Protocol. A remote attacker could possibly use this issue\nto cause a denial of service. This issue only affected Ubuntu 14.04 LTS\nand Ubuntu 16.04 LTS. (CVE-2016-10129)\n\nIt was discovered that libgit2 incorrectly handled error reporting in the\nHTTP transport. A remote attacker could possibly use this issue to spoof\nservers. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-10130)\n\nIt was discovered that libgit2 incorrectly handled certain crafted \"ng\"\npackets. A remote attacker could possibly use this issue to cause a denial\nof service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,\nand Ubuntu 18.04 LTS. (CVE-2018-15501)\n\nKrishna Ram Prakash R and Vivek Parikh discovered that libgit2 incorrectly\nhandled certain repository index files. A local attacker could possibly use\nthis issue to cause a denial of service. This issue only affected Ubuntu\n18.04 LTS. (CVE-2018-8098)\n\nKrishna Ram Prakash R and Vivek Parikh discovered that libgit2 incorrectly\nhandled certain repository index files. A local attacker could possibly use\nthis issue to cause a denial of service. This issue only affected Ubuntu\n14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2018-8099)\n\nMicha\u0142 Majchrowicz and Marcin Wyczechowski discovered that libgit2\nincorrectly handled submodule paths. A remote attacker could possibly use\nthis issue to write files outside the working tree. This issue only\naffected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-53584)\n\nMicha\u0142 Majchrowicz and Marcin Wyczechowski discovered that libgit2\nincorrectly handled delta object result-size headers. A remote attacker\ncould possibly use this issue to cause libgit2 to consume excessive memory,\nleading to a denial of service. (CVE-2026-53585)\n\nThai Son Dinh discovered that libgit2 incorrectly handled HTTP redirects.\nA remote attacker could possibly use this issue to leak credentials to an\noffsite redirect target. This issue only affected Ubuntu 20.04 LTS,\nUbuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-53586)\n\nIt was discovered that libgit2 incorrectly handled certain capability\nbuffers in the smart protocol. A remote attacker could possibly use this\nissue to cause a denial of service. This issue only affected Ubuntu 24.04\nLTS and Ubuntu 26.04 LTS. (CVE-2026-53587)",
  "id": "USN-8628-1",
  "modified": "2026-08-13T16:52:43Z",
  "published": "2026-08-12T19:13:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8628-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-10128"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-10129"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-10130"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-8098"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-8099"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-15501"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53584"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53585"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53586"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53587"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libgit2 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2016-10128",
    "UBUNTU-CVE-2016-10129",
    "UBUNTU-CVE-2016-10130",
    "UBUNTU-CVE-2018-8098",
    "UBUNTU-CVE-2018-8099",
    "UBUNTU-CVE-2018-15501",
    "UBUNTU-CVE-2026-53584",
    "UBUNTU-CVE-2026-53585",
    "UBUNTU-CVE-2026-53586",
    "UBUNTU-CVE-2026-53587"
  ]
}



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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.