UBUNTU-CVE-2026-50142
- Source
- https://ubuntu.com/security/CVE-2026-50142
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50142.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-50142
- Upstream
- Downstream
- Related
- Published
- 2026-07-02T00:00:00Z
- Modified
- 2026-09-02T19:36:24Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.0, a crafted HEIF sequence accepted by heif_context_read_from_memory() with the msf1 sequence brand can cause unbounded heap allocation. In libheif/sequences/seq_boxes.cc, Box_stsz::parse() applies max_sequence_frames only to variable-size samples, so fixed-size mode accepts an attacker-controlled sample_count without a bound. In libheif/sequences/track.cc, Track::load() also adds current_sample_idx and samples_per_chunk in 32-bit arithmetic, allowing the consistency check to be bypassed by wraparound. The resulting values reach the Chunk::Chunk() allocation path, which can consume gigabytes of memory and crash or stall the process through memory exhaustion. This issue is fixed in version 1.23.0.
- References
Affected packages
Ubuntu:25.10 / libheif
Package
- Name
- libheif
- Purl
- pkg:deb/ubuntu/libheif?arch=source&distro=questing
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1.20.2-1ubuntu0.6
Affected versions
1.*
1.19.7-1
1.19.8-1
1.20.2-1
1.20.2-1ubuntu0.1
1.20.2-1ubuntu0.3
1.20.2-1ubuntu0.4
1.20.2-1ubuntu0.5
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "heif-gdk-pixbuf",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "heif-thumbnailer",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "heif-view",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-examples",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-aomdec",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-aomenc",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-dav1d",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-ffmpegdec",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-j2kdec",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-j2kenc",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-jpegdec",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-jpegenc",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-kvazaar",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-libde265",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-rav1e",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-svtenc",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugin-x265",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif-plugins-all",
"binary_version": "1.20.2-1ubuntu0.6"
},
{
"binary_name": "libheif1",
"binary_version": "1.20.2-1ubuntu0.6"
}
]
}
Ubuntu:26.04:LTS / libheif
Package
- Name
- libheif
- Purl
- pkg:deb/ubuntu/libheif?arch=source&distro=resolute
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1.21.2-3ubuntu0.3
Affected versions
1.*
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
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"
}
]
}