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libde265 vulnerability

Type: advisorySources: OSV

It was discovered that libde265 did not properly validate certain crafted H.265 bitstreams, leading to a NULL pointer dereference. An attacker could possibly use this issue to cause libde265 to crash, resulting in a denial of service.

Products
libde265
Affected 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, 1.0.15-1ubuntu0.1, 1.0.16-1, 1.0.16-1build1, 1.0.16-1ubuntu0.1~esm1, 1.0.2-1build1, 1.0.2-2, 1.0.2-2build1, 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, 1.0.2-2ubuntu0.16.04.1~esm6, 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, 1.0.2-2ubuntu0.18.04.1~esm6, 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, 1.0.4-1ubuntu0.4+esm2, 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, 1.0.8-1ubuntu0.3+esm2
Fixed versions
1.0.15-1ubuntu0.2, 1.0.16-1ubuntu0.1~esm2, 1.0.2-2ubuntu0.16.04.1~esm7, 1.0.2-2ubuntu0.18.04.1~esm7, 1.0.4-1ubuntu0.4+esm3, 1.0.8-1ubuntu0.3+esm3
CVEs
CVE-2026-88373
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 13:12 UTC · Revision 1

Source evidence

libde265 vulnerability

core-osv · Original source

Published 8 Oct 2026, 17:11 UTC

It was discovered that libde265 did not properly validate certain crafted H.265 bitstreams, leading to a NULL pointer dereference. An attacker could possibly use this issue to cause libde265 to crash, resulting in a denial of service.

osv:USN-8909-1

libde265

Fixed versions: 1.0.2-2ubuntu0.16.04.1~esm7

libde265

Fixed versions: 1.0.2-2ubuntu0.18.04.1~esm7

libde265

Fixed versions: 1.0.4-1ubuntu0.4+esm3

libde265

Fixed versions: 1.0.8-1ubuntu0.3+esm3

libde265

Fixed versions: 1.0.15-1ubuntu0.2

libde265

Fixed versions: 1.0.16-1ubuntu0.1~esm2

Complete source record
{
  "id": "b4a0175bfaf7a99f08b475032fe84570cbdf30c50b9e75f74c7f6f023f9d0118",
  "url": "https://osv.dev/vulnerability/USN-8909-1",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libde265 vulnerability",
    "summary": "It was discovered that libde265 did not properly validate certain crafted H.265 bitstreams, leading to a NULL pointer dereference. An attacker could possibly use this issue to cause libde265 to crash, resulting in a denial of service.",
    "evidence": "osv:USN-8909-1",
    "products": [
      {
        "name": {
          "value": "libde265",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.2-2ubuntu0.16.04.1~esm7",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.0.2-1build1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.2-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.16.04.1~esm1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.16.04.1~esm2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.16.04.1~esm3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.16.04.1~esm4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.16.04.1~esm5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.16.04.1~esm6",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libde265",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.2-2ubuntu0.18.04.1~esm7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.0.2-2build1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.18.04.1~esm1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.18.04.1~esm2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.18.04.1~esm3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.18.04.1~esm4",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.18.04.1~esm5",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.2-2ubuntu0.18.04.1~esm6",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libde265",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.4-1ubuntu0.4+esm3",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.0.3-1build1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1build1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1ubuntu0.1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1ubuntu0.2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1ubuntu0.3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1ubuntu0.4",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1ubuntu0.4+esm1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.0.4-1ubuntu0.4+esm2",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libde265",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.8-1ubuntu0.3+esm3",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.0.8-1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.0.8-1ubuntu0.1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.0.8-1ubuntu0.2",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.0.8-1ubuntu0.3",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.0.8-1ubuntu0.3+esm1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.0.8-1ubuntu0.3+esm2",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libde265",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.15-1ubuntu0.2",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.0.12-2",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.0.13-1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.0.15-1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.0.15-1build1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.0.15-1build2",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.0.15-1build3",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.0.15-1ubuntu0.1",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libde265",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.16-1ubuntu0.1~esm2",
            "evidence": "/affected/5/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.0.16-1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.0.16-1build1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.0.16-1ubuntu0.1~esm1",
            "evidence": "/affected/5/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "USN-8909-1",
      "aliases": [
        "USN-8909-1"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.2-2ubuntu0.16.04.1~esm7"
                }
              ]
            }
          ],
          "package": {
            "name": "libde265",
            "purl": "pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps-legacy%2Fxenial",
            "ecosystem": "Ubuntu:Pro:16.04:LTS"
          },
          "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",
            "1.0.2-2ubuntu0.16.04.1~esm6"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8909-1.json",
            "cves_map": {
              "cves": [
                {
                  "id": "CVE-2026-88373",
                  "severity": [
                    {
                      "type": "CVSS_V3",
                      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                      "type": "Ubuntu",
                      "score": "medium"
                    }
                  ]
                }
              ],
              "ecosystem": "Ubuntu:Pro:16.04:LTS"
            }
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libde265-0",
                "binary_version": "1.0.2-2ubuntu0.16.04.1~esm7"
              },
              {
                "binary_name": "libde265-examples",
                "binary_version": "1.0.2-2ubuntu0.16.04.1~esm7"
              }
            ],
            "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.2-2ubuntu0.18.04.1~esm7"
                }
              ]
            }
          ],
          "package": {
            "name": "libde265",
            "purl": "pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fbionic",
            "ecosystem": "Ubuntu:Pro:18.04:LTS"
          },
          "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",
            "1.0.2-2ubuntu0.18.04.1~esm6"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8909-1.json",
            "cves_map": {
              "cves": [
                {
                  "id": "CVE-2026-88373",
                  "severity": [
                    {
                      "type": "CVSS_V3",
                      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                      "type": "Ubuntu",
                      "score": "medium"
                    }
                  ]
                }
              ],
              "ecosystem": "Ubuntu:Pro:18.04:LTS"
            }
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libde265-0",
                "binary_version": "1.0.2-2ubuntu0.18.04.1~esm7"
              },
              {
                "binary_name": "libde265-examples",
                "binary_version": "1.0.2-2ubuntu0.18.04.1~esm7"
              }
            ],
            "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.4-1ubuntu0.4+esm3"
                }
              ]
            }
          ],
          "package": {
            "name": "libde265",
            "purl": "pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Ffocal",
            "ecosystem": "Ubuntu:Pro:20.04:LTS"
          },
          "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",
            "1.0.4-1ubuntu0.4+esm2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8909-1.json",
            "cves_map": {
              "cves": [
                {
                  "id": "CVE-2026-88373",
                  "severity": [
                    {
                      "type": "CVSS_V3",
                      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                      "type": "Ubuntu",
                      "score": "medium"
                    }
                  ]
                }
              ],
              "ecosystem": "Ubuntu:Pro:20.04:LTS"
            }
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libde265-0",
                "binary_version": "1.0.4-1ubuntu0.4+esm3"
              },
              {
                "binary_name": "libde265-examples",
                "binary_version": "1.0.4-1ubuntu0.4+esm3"
              }
            ],
            "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.8-1ubuntu0.3+esm3"
                }
              ]
            }
          ],
          "package": {
            "name": "libde265",
            "purl": "pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fjammy",
            "ecosystem": "Ubuntu:Pro:22.04:LTS"
          },
          "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",
            "1.0.8-1ubuntu0.3+esm2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8909-1.json",
            "cves_map": {
              "cves": [
                {
                  "id": "CVE-2026-88373",
                  "severity": [
                    {
                      "type": "CVSS_V3",
                      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                      "type": "Ubuntu",
                      "score": "medium"
                    }
                  ]
                }
              ],
              "ecosystem": "Ubuntu:Pro:22.04:LTS"
            }
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libde265-0",
                "binary_version": "1.0.8-1ubuntu0.3+esm3"
              },
              {
                "binary_name": "libde265-examples",
                "binary_version": "1.0.8-1ubuntu0.3+esm3"
              }
            ],
            "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.15-1ubuntu0.2"
                }
              ]
            }
          ],
          "package": {
            "name": "libde265",
            "purl": "pkg:deb/ubuntu/libde265?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "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",
            "1.0.15-1ubuntu0.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8909-1.json",
            "cves_map": {
              "cves": [
                {
                  "id": "CVE-2026-88373",
                  "severity": [
                    {
                      "type": "CVSS_V3",
                      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                      "type": "Ubuntu",
                      "score": "medium"
                    }
                  ]
                }
              ],
              "ecosystem": "Ubuntu:24.04:LTS"
            }
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libde265-0",
                "binary_version": "1.0.15-1ubuntu0.2"
              },
              {
                "binary_name": "libde265-examples",
                "binary_version": "1.0.15-1ubuntu0.2"
              }
            ],
            "availability": "No subscription required"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.16-1ubuntu0.1~esm2"
                }
              ]
            }
          ],
          "package": {
            "name": "libde265",
            "purl": "pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fresolute",
            "ecosystem": "Ubuntu:Pro:26.04:LTS"
          },
          "versions": [
            "1.0.16-1",
            "1.0.16-1build1",
            "1.0.16-1ubuntu0.1~esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8909-1.json",
            "cves_map": {
              "cves": [
                {
                  "id": "CVE-2026-88373",
                  "severity": [
                    {
                      "type": "CVSS_V3",
                      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                      "type": "Ubuntu",
                      "score": "medium"
                    }
                  ]
                }
              ],
              "ecosystem": "Ubuntu:Pro:26.04:LTS"
            }
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libde265-0",
                "binary_version": "1.0.16-1ubuntu0.1~esm2"
              },
              {
                "binary_name": "libde265-examples",
                "binary_version": "1.0.16-1ubuntu0.1~esm2"
              }
            ],
            "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
          }
        }
      ],
      "modified": "2026-10-10T01:11:51.820581981Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-88373",
        "UBUNTU-CVE-2026-88373"
      ],
      "references": [
        "https://ubuntu.com/security/notices/USN-8909-1",
        "https://ubuntu.com/security/CVE-2026-88373"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-88373",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 125070,
  "published_at": "2026-10-08T17:11:46+00:00"
}