ubuntu-cve-2026-43907
Vulnerability from osv_ubuntu
Published
2026-05-14 20:17
Modified
2026-06-16 19:55
Summary
Details

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed integer overflow in QueryRGBBufferSizeInternal() in DPXColorConverter.cpp leads to a heap-based out-of-bounds write when processing crafted DPX image files. The function computes buffer sizes using 32-bit signed integer arithmetic with negative multipliers (e.g., pixels * -3 * bytes for kCbYCr descriptors and pixels * -4 * bytes for kABGR descriptors), where a negative result is used as an in-band signal that no separate buffer is needed. When the pixel count is sufficiently large, the multiplication overflows INT_MIN and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a required buffer size, allocates an undersized heap buffer via m_decodebuf.resize(), and then writes the full image data into it via fread, resulting in a heap buffer overflow. An attacker can exploit this by crafting a DPX file that triggers the overflow, causing a denial of service (crash) or potentially arbitrary code execution through heap corruption in any application that reads pixel data using OpenImageIO. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libopenimageio1.6",
            "binary_version": "1.6.11~dfsg0-1ubuntu1+esm2"
          },
          {
            "binary_name": "openimageio-tools",
            "binary_version": "1.6.11~dfsg0-1ubuntu1+esm2"
          },
          {
            "binary_name": "python-openimageio",
            "binary_version": "1.6.11~dfsg0-1ubuntu1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "openimageio",
        "purl": "pkg:deb/ubuntu/openimageio@1.6.11~dfsg0-1ubuntu1+esm2?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.6.11~dfsg0-1ubuntu1+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.5.17~dfsg0-1ubuntu2",
        "1.5.20~dfsg0-1ubuntu2",
        "1.5.23~dfsg0-1ubuntu1",
        "1.6.9~dfsg0-4ubuntu1",
        "1.6.10~dfsg0-1ubuntu1",
        "1.6.10~dfsg0-2ubuntu1",
        "1.6.11~dfsg0-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libopenimageio1.7",
            "binary_version": "1.7.17~dfsg0-1ubuntu2+esm1"
          },
          {
            "binary_name": "openimageio-tools",
            "binary_version": "1.7.17~dfsg0-1ubuntu2+esm1"
          },
          {
            "binary_name": "python-openimageio",
            "binary_version": "1.7.17~dfsg0-1ubuntu2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "openimageio",
        "purl": "pkg:deb/ubuntu/openimageio@1.7.17~dfsg0-1ubuntu2+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.17~dfsg0-1ubuntu2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.17~dfsg0-1ubuntu5",
        "1.7.17~dfsg0-1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libopenimageio2.1",
            "binary_version": "2.1.12.0~dfsg0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "openimageio-tools",
            "binary_version": "2.1.12.0~dfsg0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-openimageio",
            "binary_version": "2.1.12.0~dfsg0-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "openimageio",
        "purl": "pkg:deb/ubuntu/openimageio@2.1.12.0~dfsg0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.12.0~dfsg0-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.10~dfsg0-1",
        "2.0.11~dfsg0-1",
        "2.0.12~dfsg0-1",
        "2.0.12~dfsg0-1build1",
        "2.0.12~dfsg0-1build2",
        "2.1.10.1~dfsg0-5ubuntu4",
        "2.1.10.1~dfsg0-5ubuntu5",
        "2.1.12.0~dfsg0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopenimageio2.2",
            "binary_version": "2.2.18.0+dfsg-1ubuntu2"
          },
          {
            "binary_name": "openimageio-tools",
            "binary_version": "2.2.18.0+dfsg-1ubuntu2"
          },
          {
            "binary_name": "python3-openimageio",
            "binary_version": "2.2.18.0+dfsg-1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "openimageio",
        "purl": "pkg:deb/ubuntu/openimageio@2.2.18.0+dfsg-1ubuntu2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.10.1+dfsg-1build1",
        "2.2.18.0+dfsg-1",
        "2.2.18.0+dfsg-1build2",
        "2.2.18.0+dfsg-1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libopenimageio2.4t64",
            "binary_version": "2.4.17.0+dfsg-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "openimageio-tools",
            "binary_version": "2.4.17.0+dfsg-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-openimageio",
            "binary_version": "2.4.17.0+dfsg-1.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "openimageio",
        "purl": "pkg:deb/ubuntu/openimageio@2.4.17.0+dfsg-1.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.17.0+dfsg-1.1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.14.0+dfsg-1",
        "2.4.16.0+dfsg-1",
        "2.4.16.0+dfsg-1build1",
        "2.4.17.0+dfsg-1",
        "2.4.17.0+dfsg-1build1",
        "2.4.17.0+dfsg-1.1build3",
        "2.4.17.0+dfsg-1.1build4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopenimageio2.5",
            "binary_version": "2.5.18.0+dfsg-1build2"
          },
          {
            "binary_name": "openimageio-tools",
            "binary_version": "2.5.18.0+dfsg-1build2"
          },
          {
            "binary_name": "python3-openimageio",
            "binary_version": "2.5.18.0+dfsg-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "openimageio",
        "purl": "pkg:deb/ubuntu/openimageio@2.5.18.0+dfsg-1build2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.5.18.0+dfsg-1build1",
        "2.5.18.0+dfsg-1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libopenimageio2.5",
            "binary_version": "2.5.19.1+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "openimageio-tools",
            "binary_version": "2.5.19.1+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-openimageio",
            "binary_version": "2.5.19.1+dfsg-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "openimageio",
        "purl": "pkg:deb/ubuntu/openimageio@2.5.19.1+dfsg-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.19.1+dfsg-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.5.18.0+dfsg-1build2",
        "2.5.19.1+dfsg-1build1",
        "2.5.19.1+dfsg-1build3",
        "2.5.19.1+dfsg-1build5",
        "2.5.19.1+dfsg-2"
      ]
    }
  ],
  "aliases": [],
  "details": "OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed integer overflow in QueryRGBBufferSizeInternal() in DPXColorConverter.cpp leads to a heap-based out-of-bounds write when processing crafted DPX image files. The function computes buffer sizes using 32-bit signed integer arithmetic with negative multipliers (e.g., pixels * -3 * bytes for kCbYCr descriptors and pixels * -4 * bytes for kABGR descriptors), where a negative result is used as an in-band signal that no separate buffer is needed. When the pixel count is sufficiently large, the multiplication overflows INT_MIN and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a required buffer size, allocates an undersized heap buffer via m_decodebuf.resize(), and then writes the full image data into it via fread, resulting in a heap buffer overflow. An attacker can exploit this by crafting a DPX file that triggers the overflow, causing a denial of service (crash) or potentially arbitrary code execution through heap corruption in any application that reads pixel data using OpenImageIO. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.",
  "id": "UBUNTU-CVE-2026-43907",
  "modified": "2026-06-16T19:55:00Z",
  "published": "2026-05-14T20:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-43907"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43907"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-cq46-hp4h-cvfr"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-43907"
  ]
}



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