UBUNTU-CVE-2026-84448

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Source
https://ubuntu.com/security/CVE-2026-84448
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84448.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-84448
Upstream
Published
2026-09-21T00:00:00Z
Modified
2026-09-21T21:38:41Z
Severity
  • 4.0 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:18.04:LTS / libheif

Package

Name
libheif
Purl
pkg:deb/ubuntu/libheif?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libheif-examples",
            "binary_version":  "1.1.0-2ubuntu0.1~esm4"
        },
        {
            "binary_name":  "libheif1",
            "binary_version":  "1.1.0-2ubuntu0.1~esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84448.json"

Ubuntu:Pro:20.04:LTS / libheif

Package

Name
libheif
Purl
pkg:deb/ubuntu/libheif?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "heif-gdk-pixbuf",
            "binary_version":  "1.6.1-1ubuntu0.1~esm4"
        },
        {
            "binary_name":  "heif-thumbnailer",
            "binary_version":  "1.6.1-1ubuntu0.1~esm4"
        },
        {
            "binary_name":  "libheif-examples",
            "binary_version":  "1.6.1-1ubuntu0.1~esm4"
        },
        {
            "binary_name":  "libheif1",
            "binary_version":  "1.6.1-1ubuntu0.1~esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84448.json"

Ubuntu:Pro:22.04:LTS / libheif

Package

Name
libheif
Purl
pkg:deb/ubuntu/libheif?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

1.*
1.11.0-1
1.12.0-2build1
1.12.0-2ubuntu0.1~esm1
1.12.0-2ubuntu0.1~esm2
1.12.0-2ubuntu0.1~esm3
1.12.0-2ubuntu0.1~esm4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "heif-gdk-pixbuf",
            "binary_version":  "1.12.0-2ubuntu0.1~esm4"
        },
        {
            "binary_name":  "heif-thumbnailer",
            "binary_version":  "1.12.0-2ubuntu0.1~esm4"
        },
        {
            "binary_name":  "libheif-examples",
            "binary_version":  "1.12.0-2ubuntu0.1~esm4"
        },
        {
            "binary_name":  "libheif1",
            "binary_version":  "1.12.0-2ubuntu0.1~esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84448.json"

Ubuntu:24.04:LTS / libheif

Package

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

Affected ranges

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

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "heif-gdk-pixbuf",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "heif-thumbnailer",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-examples",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-aomdec",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-aomenc",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-dav1d",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-ffmpegdec",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-j2kdec",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-j2kenc",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-jpegdec",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-jpegenc",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-libde265",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-rav1e",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-svtenc",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif-plugin-x265",
            "binary_version":  "1.17.6-1ubuntu4.8"
        },
        {
            "binary_name":  "libheif1",
            "binary_version":  "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"

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
1.21.2-3ubuntu0.5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "heif-gdk-pixbuf",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "heif-thumbnailer",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "heif-view",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-examples",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-aomdec",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-aomenc",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-dav1d",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-ffmpegdec",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-j2kdec",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-j2kenc",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-jpegdec",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-jpegenc",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-kvazaar",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-libde265",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-rav1e",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-svtenc",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugin-x265",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif-plugins-all",
            "binary_version":  "1.21.2-3ubuntu0.5"
        },
        {
            "binary_name":  "libheif1",
            "binary_version":  "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"