{
  "cveId": "CVE-2026-43907",
  "url": "https://patchblox.com/security/cve/CVE-2026-43907",
  "summary": "CVE-2026-43907 is fixed in 8 products on 1 platform, first by libopenimageio1.7 1.7.17~dfsg0-1ubuntu2\u002Besm1, released May 14, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "openimageio: OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX...",
  "description": "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.",
  "published": "2026-05-14T13:17:00Z",
  "severity": "high",
  "cvss": 8.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H",
  "epss": 0.0037,
  "epssPercentile": 0.31122,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libopenimageio1.7",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.7.17~dfsg0-1ubuntu2\u002Besm1",
      "fix": "libopenimageio1.7 1.7.17~dfsg0-1ubuntu2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libopenimageio1.7-1.7.17-dfsg0-1ubuntu2-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libopenimageio2.1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.1.12.0~dfsg0-1ubuntu0.1~esm1",
      "fix": "libopenimageio2.1 2.1.12.0~dfsg0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libopenimageio2.1-2.1.12.0-dfsg0-1ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libopenimageio2.4t64",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.4.17.0\u002Bdfsg-1.1ubuntu0.1~esm1",
      "fix": "libopenimageio2.4t64 2.4.17.0\u002Bdfsg-1.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libopenimageio2.4t64-2.4.17.0-dfsg-1.1ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libopenimageio2.5",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.5.19.1\u002Bdfsg-2ubuntu0.1~esm1",
      "fix": "libopenimageio2.5 2.5.19.1\u002Bdfsg-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libopenimageio2.5-2.5.19.1-dfsg-2ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "openimageio",
      "release": "Debian 14",
      "fixedVersion": "3.1.18.0\u002Bdfsg-2",
      "fix": "DEBIAN-CVE-2026-43907",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-43907",
      "released": "2026-05-14T20:17:06Z"
    },
    {
      "platform": "linux",
      "product": "openimageio-tools",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.7.17~dfsg0-1ubuntu2\u002Besm1",
      "fix": "openimageio-tools 1.7.17~dfsg0-1ubuntu2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-openimageio-tools-1.7.17-dfsg0-1ubuntu2-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "openimageio-tools",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.1.12.0~dfsg0-1ubuntu0.1~esm1",
      "fix": "openimageio-tools 2.1.12.0~dfsg0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-openimageio-tools-2.1.12.0-dfsg0-1ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "openimageio-tools",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.4.17.0\u002Bdfsg-1.1ubuntu0.1~esm1",
      "fix": "openimageio-tools 2.4.17.0\u002Bdfsg-1.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-openimageio-tools-2.4.17.0-dfsg-1.1ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "openimageio-tools",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.5.19.1\u002Bdfsg-2ubuntu0.1~esm1",
      "fix": "openimageio-tools 2.5.19.1\u002Bdfsg-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-openimageio-tools-2.5.19.1-dfsg-2ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python-openimageio",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.7.17~dfsg0-1ubuntu2\u002Besm1",
      "fix": "python-openimageio 1.7.17~dfsg0-1ubuntu2\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-openimageio-1.7.17-dfsg0-1ubuntu2-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-openimageio",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.1.12.0~dfsg0-1ubuntu0.1~esm1",
      "fix": "python3-openimageio 2.1.12.0~dfsg0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python3-openimageio-2.1.12.0-dfsg0-1ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-openimageio",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.4.17.0\u002Bdfsg-1.1ubuntu0.1~esm1",
      "fix": "python3-openimageio 2.4.17.0\u002Bdfsg-1.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-openimageio-2.4.17.0-dfsg-1.1ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-openimageio",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.5.19.1\u002Bdfsg-2ubuntu0.1~esm1",
      "fix": "python3-openimageio 2.5.19.1\u002Bdfsg-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-openimageio-2.5.19.1-dfsg-2ubuntu0.1-esm1",
      "released": "2026-05-14T13:17:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}