USN-8846-1 (UBUNTU-CVE-2026-84384)
Vulnerability from osv_ubuntu – Published: 2026-09-29 16:18 – Updated: 2026-10-01 21:37 – Source websiteYuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain compressed metadata. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84384)
Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain HEIF sequence data. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84446)
Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain image references. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84447)
It was discovered that libheif incorrectly handled certain region masks. A local attacker could possibly use this issue to obtain sensitive information or cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84448)
It was discovered that libheif incorrectly handled certain images. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-84449)
{
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{
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{
"id": "CVE-2026-84447",
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{
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{
"database_specific": {
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},
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"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
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},
{
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"binary_version": "1.12.0-2ubuntu0.1~esm5"
},
{
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"binary_version": "1.12.0-2ubuntu0.1~esm5"
},
{
"binary_name": "libheif1",
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}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif@1.12.0-2ubuntu0.1~esm5?arch=source\u0026distro=esm-apps/jammy"
},
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},
{
"database_specific": {
"cves_map": {
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{
"id": "CVE-2026-84384",
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"id": "CVE-2026-84448",
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"id": "CVE-2026-84449",
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],
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}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
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"binary_name": "heif-gdk-pixbuf",
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"binary_name": "libheif-plugin-j2kdec",
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"binary_name": "libheif-plugin-jpegdec",
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"binary_name": "libheif-plugin-jpegenc",
"binary_version": "1.17.6-1ubuntu4.9"
},
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"binary_name": "libheif-plugin-libde265",
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"binary_version": "1.17.6-1ubuntu4.9"
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"name": "libheif",
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],
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{
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"id": "CVE-2026-84384",
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},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-84448",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
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"binary_name": "heif-gdk-pixbuf",
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{
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{
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"name": "libheif",
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},
"ranges": [
{
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],
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],
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"1.20.2-2",
"1.20.2-2build1",
"1.20.2-2build2",
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"1.21.2-1",
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],
"aliases": [],
"details": "Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain\ncompressed metadata. A remote attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 24.04 LTS and\nUbuntu 26.04 LTS. (CVE-2026-84384)\n\nYuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain\nHEIF sequence data. A remote attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-84446)\n\nYuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain\nimage references. A remote attacker could possibly use this issue to\ncause a denial of service. This issue only affected Ubuntu 26.04 LTS.\n(CVE-2026-84447)\n\nIt was discovered that libheif incorrectly handled certain region masks.\nA local attacker could possibly use this issue to obtain sensitive\ninformation or cause a denial of service. This issue only affected Ubuntu\n24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84448)\n\nIt was discovered that libheif incorrectly handled certain images. A\nremote attacker could possibly use this issue to cause a denial of\nservice. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,\nUbuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-84449)",
"id": "USN-8846-1",
"modified": "2026-10-01T21:37:32Z",
"published": "2026-09-29T16:18:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8846-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-84384"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-84446"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-84447"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-84448"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-84449"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "libheif vulnerabilities",
"upstream": [
"UBUNTU-CVE-2026-84384",
"UBUNTU-CVE-2026-84446",
"UBUNTU-CVE-2026-84447",
"UBUNTU-CVE-2026-84448",
"UBUNTU-CVE-2026-84449"
]
}
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 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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