ubuntu-cve-2021-38593
Vulnerability from osv_ubuntu
Published
2021-08-12 02:15
Modified
2026-05-20 14:53
Summary
Details

Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt5gui5-gles",
            "binary_version": "5.5.1+dfsg-16ubuntu6"
          },
          {
            "binary_name": "libqt5opengl5-gles",
            "binary_version": "5.5.1+dfsg-16ubuntu6"
          },
          {
            "binary_name": "qt5-qmake-gles",
            "binary_version": "5.5.1+dfsg-16ubuntu6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "qtbase-opensource-src-gles",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src-gles@5.5.1+dfsg-16ubuntu6?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.2+dfsg-2ubuntu9",
        "5.5.1+dfsg-6ubuntu1",
        "5.5.1+dfsg-10ubuntu1",
        "5.5.1+dfsg-13ubuntu1",
        "5.5.1+dfsg-13ubuntu2",
        "5.5.1+dfsg-13ubuntu3",
        "5.5.1+dfsg-14ubuntu1",
        "5.5.1+dfsg-14ubuntu2",
        "5.5.1+dfsg-14ubuntu3",
        "5.5.1+dfsg-15ubuntu1",
        "5.5.1+dfsg-16ubuntu1",
        "5.5.1+dfsg-16ubuntu4",
        "5.5.1+dfsg-16ubuntu5",
        "5.5.1+dfsg-16ubuntu6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libqt5concurrent5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5core5a",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5dbus5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5gui5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5network5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5opengl5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5printsupport5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5sql5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5sql5-ibase",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5sql5-mysql",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5sql5-odbc",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5sql5-psql",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5sql5-sqlite",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5sql5-tds",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5test5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5widgets5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "libqt5xml5",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "qt5-default",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "qt5-gtk-platformtheme",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "qt5-qmake",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "qt5-qmake-bin",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "qtbase5-dev-tools",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "qtbase5-doc-html",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          },
          {
            "binary_name": "qtbase5-examples",
            "binary_version": "5.9.5+dfsg-0ubuntu2.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "qtbase-opensource-src",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src@5.9.5+dfsg-0ubuntu2.6?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.9.5+dfsg-0ubuntu2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.9.1+dfsg-10ubuntu1",
        "5.9.1+dfsg-10ubuntu2",
        "5.9.2+dfsg-4ubuntu6",
        "5.9.3+dfsg-0ubuntu1",
        "5.9.3+dfsg-0ubuntu3",
        "5.9.3+dfsg-0ubuntu4",
        "5.9.4+dfsg-0ubuntu3",
        "5.9.4+dfsg-0ubuntu4",
        "5.9.5+dfsg-0ubuntu1",
        "5.9.5+dfsg-0ubuntu2",
        "5.9.5+dfsg-0ubuntu2.1",
        "5.9.5+dfsg-0ubuntu2.3",
        "5.9.5+dfsg-0ubuntu2.4",
        "5.9.5+dfsg-0ubuntu2.5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libqt5concurrent5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5core5a",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5dbus5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5gui5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5network5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5opengl5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5printsupport5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5sql5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5sql5-ibase",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5sql5-mysql",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5sql5-odbc",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5sql5-psql",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5sql5-sqlite",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5sql5-tds",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5test5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5widgets5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "libqt5xml5",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qt5-default",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qt5-flatpak-platformtheme",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qt5-gtk-platformtheme",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qt5-qmake",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qt5-qmake-bin",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qt5-xdgdesktopportal-platformtheme",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qtbase5-dev-tools",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qtbase5-doc-html",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          },
          {
            "binary_name": "qtbase5-examples",
            "binary_version": "5.12.8+dfsg-0ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "qtbase-opensource-src",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src@5.12.8+dfsg-0ubuntu2.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.12.8+dfsg-0ubuntu2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.12.4+dfsg-4ubuntu1",
        "5.12.5+dfsg-2",
        "5.12.5+dfsg-8",
        "5.12.5+dfsg-8build1",
        "5.12.5+dfsg-9build1",
        "5.12.8+dfsg-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt5gui5-gles",
            "binary_version": "5.12.8+dfsg-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "qtbase-opensource-src-gles",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src-gles@5.12.8+dfsg-0ubuntu1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.12.4+dfsg-1build1",
        "5.12.5+dfsg-1",
        "5.12.5+dfsg-2",
        "5.12.8+dfsg-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt5gui5-gles",
            "binary_version": "5.15.3+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "qtbase-opensource-src-gles",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src-gles@5.15.3+dfsg-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.2+dfsg-4",
        "5.15.2+dfsg-5",
        "5.15.3+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt5gui5-gles",
            "binary_version": "5.15.13+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "qtbase-opensource-src-gles",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src-gles@5.15.13+dfsg-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.10+dfsg-2",
        "5.15.10+dfsg-3",
        "5.15.12+dfsg-1",
        "5.15.12+dfsg-1ubuntu1",
        "5.15.12+dfsg-1ubuntu2",
        "5.15.13+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt5gui5-gles",
            "binary_version": "5.15.17+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "qtbase-opensource-src-gles",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src-gles@5.15.17+dfsg-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.15+dfsg-2",
        "5.15.17+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libqt5gui5-gles",
            "binary_version": "5.15.18+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "qtbase-opensource-src-gles",
        "purl": "pkg:deb/ubuntu/qtbase-opensource-src-gles@5.15.18+dfsg-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.17+dfsg-1",
        "5.15.17+dfsg-2",
        "5.15.18+dfsg-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).",
  "id": "UBUNTU-CVE-2021-38593",
  "modified": "2026-05-20T14:53:29Z",
  "published": "2021-08-12T02:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-38593"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5081-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-38593"
    }
  ],
  "related": [
    "USN-5081-1"
  ],
  "schema_version": "1.7.0",
  "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"
    }
  ],
  "upstream": [
    "CVE-2021-38593"
  ]
}



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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.