{
  "cveId": "CVE-2026-84446",
  "url": "https://patchblox.com/security/cve/CVE-2026-84446",
  "summary": "CVE-2026-84446 is fixed in 20 products on 1 platform, first by heif-gdk-pixbuf 1.21.2-3ubuntu0.6, released September 18, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libheif: libheif is a HEIF and AVIF file format decoder and encoder",
  "description": "libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, crafted HEIF sequence timing and edit-list data can make Track::init_sample_timing_table() compute a logical m_num_output_samples value that exceeds the uint32_t counters used by Track_Visual::decode_next_image_sample() and Track::get_next_sample_raw_data(). The resulting comparison can never reach the oversized output count, causing non-terminating decode or raw-sample loops and bypassing max_sequence_frames. The same sequence path repeatedly calls Box_stts::get_sample_duration() and allocates Chunk::m_sample_ranges and Track::m_presentation_timeline outside MemoryHandle accounting, allowing severe CPU and memory exhaustion from a small file. This issue is fixed in version 1.23.2.",
  "published": "2026-09-18T09:17:00Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00458,
  "epssPercentile": 0.39996,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "heif-gdk-pixbuf",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "heif-gdk-pixbuf 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-heif-gdk-pixbuf-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "heif-thumbnailer",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "heif-thumbnailer 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-heif-thumbnailer-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "heif-view",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "heif-view 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-heif-view-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.23.4-1~deb13u1",
      "fix": "DEBIAN-CVE-2026-84446",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-84446",
      "released": "2026-09-19T18:30:58Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "Debian 14",
      "fixedVersion": "1.23.2-1",
      "fix": "DEBIAN-CVE-2026-84446",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-84446",
      "released": "2026-09-19T18:30:58Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.23.4-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21889-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21889-1",
      "released": "2026-09-20T12:44:23Z"
    },
    {
      "platform": "linux",
      "product": "libheif",
      "release": "sles 15.7",
      "fixedVersion": "1.23.4-150700.3.21.1",
      "fix": "SUSE-SU-2026:4276-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4276-1",
      "released": "2026-09-21T09:21:15Z"
    },
    {
      "platform": "linux",
      "product": "libheif-examples",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-examples 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-examples-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-aomdec",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-aomdec 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-aomdec-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-aomenc",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-aomenc 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-aomenc-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-dav1d",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-dav1d 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-dav1d-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-ffmpegdec",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-ffmpegdec 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-ffmpegdec-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-j2kdec",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-j2kdec 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-j2kdec-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-j2kenc",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-j2kenc 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-j2kenc-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-jpegdec",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-jpegdec 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-jpegdec-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-jpegenc",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-jpegenc 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-jpegenc-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-kvazaar",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-kvazaar 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-kvazaar-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-libde265",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-libde265 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-libde265-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-rav1e",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-rav1e 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-rav1e-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-svtenc",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-svtenc 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-svtenc-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugin-x265",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugin-x265 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugin-x265-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif-plugins-all",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif-plugins-all 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif-plugins-all-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libheif1",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.21.2-3ubuntu0.6",
      "fix": "libheif1 1.21.2-3ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libheif1-1.21.2-3ubuntu0.6",
      "released": "2026-09-18T09:17:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}