UBUNTU-CVE-2026-62377

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Source
https://ubuntu.com/security/CVE-2026-62377
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-62377.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-62377
Upstream
Published
2026-08-18T22:17:00Z
Modified
2026-09-02T16:20:05Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
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.

References

Affected packages

Ubuntu:26.04:LTS / libheif

Package

Name
libheif
Purl
pkg:deb/ubuntu/libheif?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

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
1.21.2-3ubuntu0.3
1.21.2-3ubuntu0.4

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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-62377.json"