HighFix available
libheif — security advisory
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
- Products
- libheif
- Affected versions
- 1.1.0-2, 1.1.0-2ubuntu0.1~esm1, 1.1.0-2ubuntu0.1~esm2, 1.1.0-2ubuntu0.1~esm3, 1.1.0-2ubuntu0.1~esm4, 1.1.0-2ubuntu0.1~esm5, 1.11.0-1, 1.12.0-2build1, 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, 1.17.6-1ubuntu4.8, 1.17.6-1ubuntu4.9, 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, 1.21.2-3ubuntu0.5, 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, 1.6.1-1ubuntu0.1~esm4, 1.6.1-1ubuntu0.1~esm5
- Fixed versions
- 1.21.2-3ubuntu0.6
- CVEs
- CVE-2026-84447
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:23 UTC · Revision 1
Source evidence
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
osv:UBUNTU-CVE-2026-84447
libheif
Fixed versions: Not specified
libheif
Fixed versions: Not specified
libheif
Fixed versions: Not specified
libheif
Fixed versions: Not specified
libheif
Fixed versions: 1.21.2-3ubuntu0.6
Complete source record
{
"id": "ff5056f5e7e0668b7f2757b9518e899ce1045de48c901603dd9e2a8cd9762aac",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-84447",
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"title": "UBUNTU-CVE-2026-84447",
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"evidence": "/affected/4/versions"
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{
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{
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{
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{
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"aliases": [
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},
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{
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{
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{
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{
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{
"binary_name": "libheif-plugin-jpegenc",
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{
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{
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{
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{
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{
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},
{
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},
{
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},
{
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},
{
"binary_name": "libheif-plugin-jpegenc",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-kvazaar",
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},
{
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},
{
"binary_name": "libheif-plugin-rav1e",
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},
{
"binary_name": "libheif-plugin-svtenc",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-x265",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugins-all",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif1",
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}
],
"availability": "No subscription required"
}
}
],
"modified": "2026-10-17T13:01:12.855834174Z",
"provider": "osv",
"upstream": [
"CVE-2026-84447"
],
"references": [
"https://ubuntu.com/security/CVE-2026-84447",
"https://www.cve.org/CVERecord?id=CVE-2026-84447",
"https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8",
"https://github.com/strukturag/libheif/commit/30b52a4e829efe0ee6d7208e8500b99f664af5e9",
"https://github.com/strukturag/libheif/releases/tag/v1.23.2",
"https://ubuntu.com/security/notices/USN-8846-1"
]
},
"related_cves": [
{
"value": "CVE-2026-84447",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361256,
"published_at": "2026-09-18T16:17:00+00:00"
}