UBUNTU-CVE-2026-73433

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-73433
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73433.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-73433
Upstream
Published
2026-08-12T20:17:00Z
Modified
2026-08-19T11:11:14Z
Severity
  • 6.6 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107 bytes, the counter underflows to a very large unsigned value, causing subsequent null-terminated string scanning to read far beyond the allocated heap buffer. Date-format normalization may also write beyond the buffer end. Confirmed impacts include heap out-of-bounds read, out-of-bounds write, heap information disclosure (adjacent data appearing in parsed metadata), and application crash/denial of service. The avidemux element is auto-plugged by playbin, decodebin, and gst-discoverer, so opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).

References

Affected packages

Ubuntu:22.04:LTS
gst-plugins-good1.0

Package

Name
gst-plugins-good1.0
Purl
pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.18.5-1ubuntu2
1.18.5-1ubuntu3
1.20.0-2ubuntu1
1.20.1-1ubuntu1
1.20.3-0ubuntu1
1.20.3-0ubuntu1.1
1.20.3-0ubuntu1.3
1.20.3-0ubuntu1.4
1.20.3-0ubuntu1.5
1.20.3-0ubuntu1.6
1.20.3-0ubuntu1.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.20.3-0ubuntu1.7"
        },
        {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.20.3-0ubuntu1.7"
        },
        {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.20.3-0ubuntu1.7"
        },
        {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.20.3-0ubuntu1.7"
        },
        {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.20.3-0ubuntu1.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73433.json"
Ubuntu:24.04:LTS
gst-plugins-good1.0

Package

Name
gst-plugins-good1.0
Purl
pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.22.6-1ubuntu1
1.22.6-1ubuntu2
1.22.8-3ubuntu1
1.22.9-1ubuntu1
1.24.0-1ubuntu5
1.24.0-1ubuntu7
1.24.1-2ubuntu1
1.24.2-1ubuntu1
1.24.2-1ubuntu1.1
1.24.2-1ubuntu1.2
1.24.2-1ubuntu1.3
1.24.2-1ubuntu1.4
1.24.2-1ubuntu1.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.24.2-1ubuntu1.5"
        },
        {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.24.2-1ubuntu1.5"
        },
        {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.24.2-1ubuntu1.5"
        },
        {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.24.2-1ubuntu1.5"
        },
        {
            "binary_name": "gstreamer1.0-qt6",
            "binary_version": "1.24.2-1ubuntu1.5"
        },
        {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.24.2-1ubuntu1.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73433.json"
Ubuntu:26.04:LTS
gst-plugins-good1.0

Package

Name
gst-plugins-good1.0
Purl
pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.26.5-1ubuntu2
1.27.2-1ubuntu1
1.27.90-1ubuntu1
1.28.0-1ubuntu1
1.28.0-1ubuntu3
1.28.1-1ubuntu1
1.28.2-2
1.28.2-2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.28.2-2ubuntu0.1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.28.2-2ubuntu0.1"
        },
        {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.28.2-2ubuntu0.1"
        },
        {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.28.2-2ubuntu0.1"
        },
        {
            "binary_name": "gstreamer1.0-qt6",
            "binary_version": "1.28.2-2ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73433.json"
Ubuntu:Pro:16.04:LTS
gst-plugins-good1.0

Package

Name
gst-plugins-good1.0
Purl
pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

1.*
1.6.0-1ubuntu1
1.6.1-1ubuntu1
1.6.2-1ubuntu1
1.7.1-1ubuntu1
1.7.2-1ubuntu1
1.7.90-1ubuntu1
1.7.91-1ubuntu1
1.8.0-1ubuntu1
1.8.1-1ubuntu0.1
1.8.2-1ubuntu0.1
1.8.2-1ubuntu0.2
1.8.2-1ubuntu0.3
1.8.3-1ubuntu0.3
1.8.3-1ubuntu0.4
1.8.3-1ubuntu0.5
1.8.3-1ubuntu0.5+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.8.3-1ubuntu0.5+esm1"
        },
        {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.8.3-1ubuntu0.5+esm1"
        },
        {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.8.3-1ubuntu0.5+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73433.json"
Ubuntu:Pro:18.04:LTS
gst-plugins-good1.0

Package

Name
gst-plugins-good1.0
Purl
pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

1.*
1.12.3-1ubuntu1
1.12.4-1ubuntu1
1.13.1-1ubuntu1
1.13.91-1ubuntu1
1.14.0-1ubuntu1
1.14.1-1ubuntu1~ubuntu18.04.1
1.14.4-1ubuntu1~ubuntu18.04.1
1.14.5-0ubuntu1~18.04.1
1.14.5-0ubuntu1~18.04.2
1.14.5-0ubuntu1~18.04.3
1.14.5-0ubuntu1~18.04.3+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.14.5-0ubuntu1~18.04.3+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.14.5-0ubuntu1~18.04.3+esm1"
        },
        {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.14.5-0ubuntu1~18.04.3+esm1"
        },
        {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.14.5-0ubuntu1~18.04.3+esm1"
        },
        {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.14.5-0ubuntu1~18.04.3+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73433.json"
Ubuntu:Pro:20.04:LTS
gst-plugins-good1.0

Package

Name
gst-plugins-good1.0
Purl
pkg:deb/ubuntu/gst-plugins-good1.0?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

1.*
1.16.1-1ubuntu1
1.16.2-1ubuntu1
1.16.2-1ubuntu2
1.16.2-1ubuntu2.1
1.16.3-0ubuntu1
1.16.3-0ubuntu1.1
1.16.3-0ubuntu1.2
1.16.3-0ubuntu1.3
1.16.3-0ubuntu1.3+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
        },
        {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
        },
        {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
        },
        {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73433.json"