DEBIAN-CVE-2026-84450

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Source
https://security-tracker.debian.org/tracker/CVE-2026-84450
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84450.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-84450
Upstream
Published
2026-09-18T16:17:13Z
Modified
2026-09-19T05:00:30Z
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
Summary
[none]
Details

libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.3, a crafted image item containing a clap property and an ispe width or height greater than INT32_MAX + 1 can reach crop calculations through heif_image_handle_get_image_tiling(). Box_clap::left_rounded() or Box_clap::top_rounded() passes the image dimension minus one to Fraction::Fraction(), whose uint32_t constructor uses an assertion as input validation, causing assert-enabled builds to abort. Release builds can instead compute invalid crop geometry, and the tiling API returns dimensions that the normal decode security limits reject. This issue is fixed in version 1.23.3.

References

Affected packages

Debian:12 / libheif

Package

Name
libheif
Purl
pkg:deb/debian/libheif?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.15.1-1
1.15.1-1+deb12u1
1.16.2-1
1.16.2-2
1.16.2-3
1.17.0-1
1.17.1-1
1.17.4-1
1.17.6-1
1.17.6-2
1.17.6-3
1.17.6-4
1.18.1-1
1.18.1-2
1.18.2-1
1.18.2-2
1.19.1-1~bpo12+1
1.19.1-1~bpo12+2
1.19.1-1
1.19.3-1~bpo12+1
1.19.3-1
1.19.5-1
1.19.7-1~bpo12+1
1.19.7-1
1.19.8-1
1.20.1-1
1.20.2-1
1.20.2-2
1.21.2-1
1.21.2-2
1.21.2-3
1.21.2-4
1.23.1-1
1.23.2-1
1.23.3-1
1.23.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84450.json"

Debian:13 / libheif

Package

Name
libheif
Purl
pkg:deb/debian/libheif?arch=source&distro=trixie

Affected ranges

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

Affected versions

1.*
1.19.8-1
1.19.8-1+deb13u1
1.20.1-1
1.20.2-1
1.20.2-2
1.21.2-1
1.21.2-2
1.21.2-3
1.21.2-4
1.23.1-1
1.23.2-1
1.23.3-1
1.23.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84450.json"

Debian:14 / libheif

Package

Name
libheif
Purl
pkg:deb/debian/libheif?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.23.3-1

Affected versions

1.*
1.19.8-1
1.20.1-1
1.20.2-1
1.20.2-2
1.21.2-1
1.21.2-2
1.21.2-3
1.21.2-4
1.23.1-1
1.23.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84450.json"