UBUNTU-CVE-2026-73433

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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

CVE-2026-73433

Published

2026-08-13T00:00:00Z

Modified

2026-08-13T19:31:09.140533005Z

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, gstavidemuxparsestrd() 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

0Unknown 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_version": "1.20.3-0ubuntu1.7",
            "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"
        }
    ]
}

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

0Unknown 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_version": "1.24.2-1ubuntu1.5",
            "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"
        }
    ]
}

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

0Unknown 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_version": "1.28.2-2ubuntu0.1",
            "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"
        }
    ]
}

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

0Unknown 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_version": "1.8.3-1ubuntu0.5+esm1",
            "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"
        }
    ]
}

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

0Unknown 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_version": "1.14.5-0ubuntu1~18.04.3+esm1",
            "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"
        }
    ]
}

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

0Unknown 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_version": "1.16.3-0ubuntu1.3+esm1",
            "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"
        }
    ]
}

Database specific

source

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