Vulnerability-Lookup

UBUNTU-CVE-2026-88373 (CVE-2026-88373)

Vulnerability from osv_ubuntu – Published: 2026-09-24 17:17 – Updated: 2026-10-08 17:08 – Source website

Details

libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-88373	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-88373	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.2-2ubuntu0.16.04.1~esm7?arch=source\u0026distro=esm-apps-legacy/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",
        "1.0.2-2ubuntu0.16.04.1~esm6",
        "1.0.2-2ubuntu0.16.04.1~esm7"
      ]
    },
    {
      "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.2-2ubuntu0.18.04.1~esm7?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
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            }
          ],
          "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",
        "1.0.2-2ubuntu0.18.04.1~esm6",
        "1.0.2-2ubuntu0.18.04.1~esm7"
      ]
    },
    {
      "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.4-1ubuntu0.4+esm3?arch=source\u0026distro=esm-apps/focal"
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        {
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            }
          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "1.0.3-1build1",
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        "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",
        "1.0.4-1ubuntu0.4+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
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          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.8-1ubuntu0.3+esm3"
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.8-1ubuntu0.3+esm3?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
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            {
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-1",
        "1.0.8-1ubuntu0.1",
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        "1.0.8-1ubuntu0.3+esm1",
        "1.0.8-1ubuntu0.3+esm2",
        "1.0.8-1ubuntu0.3+esm3"
      ]
    },
    {
      "ecosystem_specific": {
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      ],
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        "1.0.15-1build3",
        "1.0.15-1ubuntu0.1",
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      ]
    },
    {
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            "binary_version": "1.0.16-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "libde265",
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      ]
    }
  ],
  "aliases": [],
  "details": "libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.",
  "id": "UBUNTU-CVE-2026-88373",
  "modified": "2026-10-08T17:08:19Z",
  "published": "2026-09-24T17:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-88373"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-88373"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-88373"
  ]
}

CVE-2026-88373 (GCVE-0-2026-88373)

Vulnerability from cvelistv5 – Published: 2026-09-24 00:00 – Updated: 2026-09-25 17:25

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-25 17:24 UTC

CWE

n/a
CWE-476 - NULL Pointer Dereference

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2387 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/strukturag/libde265/issues/534
https://github.com/strukturag/libde265/commit/f8d…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-88373",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-25T17:24:11.917709Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-25T17:25:19.677Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/strukturag/libde265/issues/534"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T16:35:04.592Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
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          "url": "https://github.com/strukturag/libde265/issues/534"
        },
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        }
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-88373",
    "datePublished": "2026-09-24T00:00:00.000Z",
    "dateReserved": "2026-09-10T00:00:00.000Z",
    "dateUpdated": "2026-09-25T17:25:19.677Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

USN-8909-1 (UBUNTU-CVE-2026-88373)

Vulnerability from osv_ubuntu – Published: 2026-10-08 17:11 – Updated: 2026-10-08 17:11 – Source website

Summary

libde265 vulnerability

Details

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.

References

URL

Type

	https://ubuntu.com/security/notices/USN-8909-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-88373	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm7"
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          {
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            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm7"
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      "package": {
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      ],
      "versions": [
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        "1.0.2-2ubuntu0.18.04.1~esm5",
        "1.0.2-2ubuntu0.18.04.1~esm6"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.4-1ubuntu0.4+esm3?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
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      ],
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    },
    {
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        "cves_map": {
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        }
      },
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        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
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        "1.0.8-1ubuntu0.3+esm2"
      ]
    },
    {
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        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libde265-0",
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          },
          {
            "binary_name": "libde265-examples",
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          }
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      },
      "ranges": [
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          "type": "ECOSYSTEM"
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        "1.0.15-1build3",
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      ]
    },
    {
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        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
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          {
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          }
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      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.16-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.16-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.16-1",
        "1.0.16-1build1",
        "1.0.16-1ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that libde265 did not properly validate certain crafted\nH.265 bitstreams, leading to a NULL pointer dereference. An attacker could\npossibly use this issue to cause libde265 to crash, resulting in a denial\nof service.",
  "id": "USN-8909-1",
  "modified": "2026-10-08T17:11:46Z",
  "published": "2026-10-08T17:11:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8909-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-88373"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libde265 vulnerability",
  "upstream": [
    "UBUNTU-CVE-2026-88373"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2026-88373 (CVE-2026-88373)

CVE-2026-88373 (GCVE-0-2026-88373)

USN-8909-1 (UBUNTU-CVE-2026-88373)

Tags

Sightings

Nomenclature

Related by attack behaviour