ubuntu-cve-2026-33165
Vulnerability from osv_ubuntu
Published
2026-03-20 21:17
Modified
2026-05-20 15:27
Summary
Details

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctb_info.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing set_SliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation. This issue has been patched in version 1.0.17.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm5"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.2-2ubuntu0.16.04.1~esm5?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2-1build1",
        "1.0.2-2",
        "1.0.2-2ubuntu0.16.04.1~esm1",
        "1.0.2-2ubuntu0.16.04.1~esm2",
        "1.0.2-2ubuntu0.16.04.1~esm3",
        "1.0.2-2ubuntu0.16.04.1~esm4",
        "1.0.2-2ubuntu0.16.04.1~esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.2-2ubuntu0.18.04.1~esm5"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.2-2ubuntu0.18.04.1~esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.2-2ubuntu0.18.04.1~esm5?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2-2build1",
        "1.0.2-2ubuntu0.18.04.1~esm1",
        "1.0.2-2ubuntu0.18.04.1~esm2",
        "1.0.2-2ubuntu0.18.04.1~esm3",
        "1.0.2-2ubuntu0.18.04.1~esm4",
        "1.0.2-2ubuntu0.18.04.1~esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.4-1ubuntu0.4+esm1"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.4-1ubuntu0.4+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.4-1ubuntu0.4+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.3-1build1",
        "1.0.4-1",
        "1.0.4-1build1",
        "1.0.4-1ubuntu0.1",
        "1.0.4-1ubuntu0.2",
        "1.0.4-1ubuntu0.3",
        "1.0.4-1ubuntu0.4",
        "1.0.4-1ubuntu0.4+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.8-1ubuntu0.3+esm1"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.8-1ubuntu0.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.8-1ubuntu0.3+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-1",
        "1.0.8-1ubuntu0.1",
        "1.0.8-1ubuntu0.2",
        "1.0.8-1ubuntu0.3",
        "1.0.8-1ubuntu0.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.15-1build3"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.15-1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.15-1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.12-2",
        "1.0.13-1",
        "1.0.15-1",
        "1.0.15-1build1",
        "1.0.15-1build2",
        "1.0.15-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.16-1"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.16-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.16-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.15-1build5",
        "1.0.16-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.16-1build1"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.16-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.16-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.16-1",
        "1.0.16-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctb_info.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing set_SliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation. This issue has been patched in version 1.0.17.",
  "id": "UBUNTU-CVE-2026-33165",
  "modified": "2026-05-20T15:27:21Z",
  "published": "2026-03-20T21:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33165"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33165"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libde265/security/advisories/GHSA-653q-9f73-8hvg"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-33165"
  ]
}



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