ubuntu-cve-2026-62377
Vulnerability from osv_ubuntu
Published
2026-08-20 00:00
Modified
2026-08-20 00:00
Summary
Details
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()->second on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.
Severity
4.3 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libheif-examples",
"binary_version": "1.1.0-2ubuntu0.1~esm3"
},
{
"binary_name": "libheif1",
"binary_version": "1.1.0-2ubuntu0.1~esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif@1.1.0-2ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.0-2",
"1.1.0-2ubuntu0.1~esm1",
"1.1.0-2ubuntu0.1~esm2",
"1.1.0-2ubuntu0.1~esm3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "heif-gdk-pixbuf",
"binary_version": "1.6.1-1ubuntu0.1~esm3"
},
{
"binary_name": "heif-thumbnailer",
"binary_version": "1.6.1-1ubuntu0.1~esm3"
},
{
"binary_name": "libheif-examples",
"binary_version": "1.6.1-1ubuntu0.1~esm3"
},
{
"binary_name": "libheif1",
"binary_version": "1.6.1-1ubuntu0.1~esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif@1.6.1-1ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.5.0-1build1",
"1.5.1-1",
"1.5.1-1build1",
"1.6.0-1",
"1.6.1-1",
"1.6.1-1build1",
"1.6.1-1ubuntu0.1~esm1",
"1.6.1-1ubuntu0.1~esm2",
"1.6.1-1ubuntu0.1~esm3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "heif-gdk-pixbuf",
"binary_version": "1.12.0-2ubuntu0.1~esm3"
},
{
"binary_name": "heif-thumbnailer",
"binary_version": "1.12.0-2ubuntu0.1~esm3"
},
{
"binary_name": "libheif-examples",
"binary_version": "1.12.0-2ubuntu0.1~esm3"
},
{
"binary_name": "libheif1",
"binary_version": "1.12.0-2ubuntu0.1~esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif@1.12.0-2ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.11.0-1",
"1.12.0-2build1",
"1.12.0-2ubuntu0.1~esm1",
"1.12.0-2ubuntu0.1~esm2",
"1.12.0-2ubuntu0.1~esm3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "heif-gdk-pixbuf",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "heif-thumbnailer",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-examples",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-aomdec",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-aomenc",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-dav1d",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-ffmpegdec",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-j2kdec",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-j2kenc",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-jpegdec",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-jpegenc",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-libde265",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-rav1e",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-svtenc",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif-plugin-x265",
"binary_version": "1.17.6-1ubuntu4.7"
},
{
"binary_name": "libheif1",
"binary_version": "1.17.6-1ubuntu4.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif@1.17.6-1ubuntu4.7?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.16.2-2ubuntu1",
"1.17.1-1ubuntu2",
"1.17.1-1ubuntu3",
"1.17.4-1ubuntu1",
"1.17.6-1ubuntu1",
"1.17.6-1ubuntu2",
"1.17.6-1ubuntu3",
"1.17.6-1ubuntu4",
"1.17.6-1ubuntu4.1",
"1.17.6-1ubuntu4.2",
"1.17.6-1ubuntu4.3",
"1.17.6-1ubuntu4.4",
"1.17.6-1ubuntu4.5",
"1.17.6-1ubuntu4.6",
"1.17.6-1ubuntu4.7"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "heif-gdk-pixbuf",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "heif-thumbnailer",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "heif-view",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-examples",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-aomdec",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-aomenc",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-dav1d",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-ffmpegdec",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-j2kdec",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-j2kenc",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-jpegdec",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-jpegenc",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-kvazaar",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-libde265",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-rav1e",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-svtenc",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugin-x265",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif-plugins-all",
"binary_version": "1.21.2-3ubuntu0.4"
},
{
"binary_name": "libheif1",
"binary_version": "1.21.2-3ubuntu0.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif@1.21.2-3ubuntu0.4?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"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",
"1.21.2-3ubuntu0.3",
"1.21.2-3ubuntu0.4"
]
}
],
"aliases": [],
"details": "libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()-\u003esecond on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.",
"id": "UBUNTU-CVE-2026-62377",
"modified": "2026-08-20T00:00:00Z",
"published": "2026-08-20T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-62377"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-62377"
},
{
"type": "REPORT",
"url": "https://github.com/strukturag/libheif/commit/e1a0bc1c1ae74f8075eaca30a1cdb2b9bee698d3"
},
{
"type": "REPORT",
"url": "https://github.com/strukturag/libheif/issues/1844"
},
{
"type": "REPORT",
"url": "https://github.com/strukturag/libheif/releases/tag/v1.23.1"
},
{
"type": "REPORT",
"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-9ww4-9v47-m7pj"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-62377"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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