UBUNTU-CVE-2026-84448
libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, the public heif_region_item_add_region_inline_mask_data() function in libheif/api/libheif/heif_regions.cc accepts mask_data_len without verifying that it equals the byte count required by width and height. A later heif_region_get_mask_image() call derives the read length from the region geometry, so an undersized stored buffer causes heif_region_get_inline_mask_image() to read beyond the heap allocation and copy adjacent bytes into the returned monochrome mask image. This can disclose heap data or crash an application that constructs region metadata through the writer API, while the file-parsing path is not affected because it validates the canonical mask size. This issue is fixed in version 1.23.2.
UBUNTU-CVE-2026-84448
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:UBUNTU-CVE-2026-84448
libheif
Source reference: /affected/0/package/name
- Affected versions
- 1.16.2-2ubuntu1
Source reference:
/affected/0/versions1.17.1-1ubuntu2Source reference:
/affected/0/versions1.17.1-1ubuntu3Source reference:
/affected/0/versions1.17.4-1ubuntu1Source reference:
/affected/0/versions1.17.6-1ubuntu1Source reference:
/affected/0/versions1.17.6-1ubuntu2Source reference:
/affected/0/versions1.17.6-1ubuntu3Source reference:
/affected/0/versions1.17.6-1ubuntu4Source reference:
/affected/0/versions1.17.6-1ubuntu4.1Source reference:
/affected/0/versions1.17.6-1ubuntu4.2Source reference:
/affected/0/versions1.17.6-1ubuntu4.3Source reference:
/affected/0/versions1.17.6-1ubuntu4.4Source reference:
/affected/0/versions1.17.6-1ubuntu4.5Source reference:
/affected/0/versions1.17.6-1ubuntu4.6Source reference:
/affected/0/versions1.17.6-1ubuntu4.7Source reference:
/affected/0/versions1.17.6-1ubuntu4.8Source reference:
/affected/0/versions - Fixed versions
- 1.17.6-1ubuntu4.9
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
libheif
Source reference: /affected/1/package/name
- Affected versions
- 1.20.2-1
Source reference:
/affected/1/versions1.20.2-2Source reference:
/affected/1/versions1.20.2-2build1Source reference:
/affected/1/versions1.20.2-2build2Source reference:
/affected/1/versions1.20.2-2ubuntu1Source reference:
/affected/1/versions1.21.2-1Source reference:
/affected/1/versions1.21.2-3Source reference:
/affected/1/versions1.21.2-3ubuntu0.1Source reference:
/affected/1/versions1.21.2-3ubuntu0.2Source reference:
/affected/1/versions1.21.2-3ubuntu0.3Source reference:
/affected/1/versions1.21.2-3ubuntu0.4Source reference:
/affected/1/versions1.21.2-3ubuntu0.5Source reference:
/affected/1/versions - Fixed versions
- 1.21.2-3ubuntu0.6
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.17.6-1ubuntu4.9"
}
]
}
],
"package": {
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"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",
"1.17.6-1ubuntu4.8"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84448.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "heif-gdk-pixbuf",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "heif-thumbnailer",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-examples",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-aomdec",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-aomenc",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-dav1d",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-ffmpegdec",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-j2kdec",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-j2kenc",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-jpegdec",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-jpegenc",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-libde265",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-rav1e",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-svtenc",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif-plugin-x265",
"binary_version": "1.17.6-1ubuntu4.9"
},
{
"binary_name": "libheif1",
"binary_version": "1.17.6-1ubuntu4.9"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.21.2-3ubuntu0.6"
}
]
}
],
"package": {
"name": "libheif",
"purl": "pkg:deb/ubuntu/libheif?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"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",
"1.21.2-3ubuntu0.5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84448.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "heif-gdk-pixbuf",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "heif-thumbnailer",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "heif-view",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-examples",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-aomdec",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-aomenc",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-dav1d",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-ffmpegdec",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-j2kdec",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-j2kenc",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-jpegdec",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-jpegenc",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-kvazaar",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-libde265",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"binary_name": "libheif-plugin-rav1e",
"binary_version": "1.21.2-3ubuntu0.6"
},
{
"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",
"binary_version": "1.21.2-3ubuntu0.6"
}
],
"availability": "No subscription required"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #65226 · Revision 1
- Added to Heist Feed
- Publisher date