Vulnerability-Lookup

CVE-2026-47254 (GCVE-0-2026-47254)

Vulnerability from cvelistv5 – Published: 2026-07-21 21:21 – Updated: 2026-07-22 18:24

Title

libheif Has Heap Buffer Overflow in `Track::get_next_sample_raw_data()` -- OOB Chunk Vector Access

Summary

libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, `Track::init_sample_timing_table()` in `libheif/sequences/track.cc` stores an out-of-bounds chunk index (`m_chunks.size()`) into `m_presentation_timeline` when the number of chunks defined in the `stco` box is less than the number of samples in `stsz`. A subsequent call to `heif_track_get_next_raw_sequence_sample()` reads `m_chunks[chunk_idx]` with that OOB index, causing a heap-buffer-overflow. Version 1.22.0 fixes the issue.

Severity

6.1 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-22 18:20 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/strukturag/libheif/security/ad…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version	CPE status
strukturag	libheif	Affected: < 1.22.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-47254

Vulnerability from fkie_nvd - Published: 2026-07-21 22:17 - Updated: 2026-07-27 15:16

Severity

6.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/strukturag/libheif/security/advisories/GHSA-wqjg-4x9g-6cvg	Exploit, Mitigation, Vendor Advisory

Impacted products

	Vendor	Product	Version
	struktur	libheif	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libheif",
          "vendor": "strukturag",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.22.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
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          "operator": "OR"
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  "cveTags": [],
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    {
      "lang": "en",
      "value": "libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, `Track::init_sample_timing_table()` in `libheif/sequences/track.cc` stores an out-of-bounds chunk index (`m_chunks.size()`) into `m_presentation_timeline` when the number of chunks defined in the `stco` box is less than the number of samples in `stsz`. A subsequent call to `heif_track_get_next_raw_sequence_sample()` reads `m_chunks[chunk_idx]` with that OOB index, causing a heap-buffer-overflow. Version 1.22.0 fixes the issue."
    }
  ],
  "id": "CVE-2026-47254",
  "lastModified": "2026-07-27T15:16:14.643",
  "metrics": {
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      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
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SUSE-SU-2026:22153-1

Vulnerability from csaf_suse - Published: 2026-06-17 08:36 - Updated: 2026-06-17 08:36

Summary

Security update for libheif

Severity

Important

Scope

20 vulnerabilities in this advisory, including CVE-2026-47254.

CVE-2026-47254

6.8 (Medium)


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

Recommended: 68 products

Open the full advisory

ubuntu-cve-2026-47254

Vulnerability from osv_ubuntu

Published

2026-07-02 00:00

Modified

2026-07-29 07:58

Summary

Details

libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, Track::init_sample_timing_table() in libheif/sequences/track.cc stores an out-of-bounds chunk index (m_chunks.size()) into m_presentation_timeline when the number of chunks defined in the stco box is less than the number of samples in stsz. A subsequent call to heif_track_get_next_raw_sequence_sample() reads m_chunks[chunk_idx] with that OOB index, causing a heap-buffer-overflow. Version 1.22.0 fixes the issue.

Severity

6.1 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-47254	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-47254	REPORT
	https://github.com/strukturag/libheif/security/ad…	REPORT
	https://ubuntu.com/security/notices/USN-8526-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "heif-gdk-pixbuf",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "heif-thumbnailer",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "heif-view",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-examples",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-aomdec",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-aomenc",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-dav1d",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-ffmpegdec",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-j2kdec",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-j2kenc",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-jpegdec",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-jpegenc",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-kvazaar",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-libde265",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-rav1e",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-svtenc",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugin-x265",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif-plugins-all",
            "binary_version": "1.21.2-3ubuntu0.3"
          },
          {
            "binary_name": "libheif1",
            "binary_version": "1.21.2-3ubuntu0.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libheif",
        "purl": "pkg:deb/ubuntu/libheif@1.21.2-3ubuntu0.3?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.21.2-3ubuntu0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.20.2-1",
        "1.20.2-2",
        "1.20.2-2build1",
        "1.20.2-2build2",
        "1.20.2-2ubuntu1",
        "1.21.2-1",
        "1.21.2-3",
        "1.21.2-3ubuntu0.1",
        "1.21.2-3ubuntu0.2"
      ]
    }
  ],
  "aliases": [],
  "details": "libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, `Track::init_sample_timing_table()` in `libheif/sequences/track.cc` stores an out-of-bounds chunk index (`m_chunks.size()`) into `m_presentation_timeline` when the number of chunks defined in the `stco` box is less than the number of samples in `stsz`. A subsequent call to `heif_track_get_next_raw_sequence_sample()` reads `m_chunks[chunk_idx]` with that OOB index, causing a heap-buffer-overflow. Version 1.22.0 fixes the issue.",
  "id": "UBUNTU-CVE-2026-47254",
  "modified": "2026-07-29T07:58:05Z",
  "published": "2026-07-02T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47254"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-47254"
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      "type": "REPORT",
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    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8526-1"
    }
  ],
  "related": [
    "USN-8526-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-47254"
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-47254 (GCVE-0-2026-47254)

FKIE_CVE-2026-47254

SUSE-SU-2026:22153-1

ubuntu-cve-2026-47254

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature