UBUNTU-CVE-2026-1940

See a problem?
Please try reporting it to the source first.

Source

https://ubuntu.com/security/CVE-2026-1940

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-1940

Upstream

CVE-2026-1940

Published

2026-03-23T22:16:00Z

Modified

2026-05-07T13:53:26.892538Z

Severity

5.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gstwavparseadtlchunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GSTROUNDUP2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.

References

Affected packages

Ubuntu:14.04:LTS

gst-plugins-bad1.0

Package

Name: gst-plugins-bad1.0
Purl: pkg:deb/ubuntu/gst-plugins-bad1.0@1.2.4-1~ubuntu1.1?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.2.0-3ubuntu5

1.2.1-1ubuntu1

1.2.1-1ubuntu2

1.2.2-1ubuntu1

1.2.2-1ubuntu2

1.2.2-1ubuntu4

1.2.3-1ubuntu1

1.2.3-1ubuntu2

1.2.4-1~ubuntu1

1.2.4-1~ubuntu1.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gstreamer1.0-hybris",
            "binary_version": "1.2.4-1~ubuntu1.1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad",
            "binary_version": "1.2.4-1~ubuntu1.1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad-faad",
            "binary_version": "1.2.4-1~ubuntu1.1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad-videoparsers",
            "binary_version": "1.2.4-1~ubuntu1.1"
        },
        {
            "binary_name": "libgstreamer-plugins-bad1.0-0",
            "binary_version": "1.2.4-1~ubuntu1.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"

Ubuntu:25.10

gst-plugins-bad1.0

Package

Name: gst-plugins-bad1.0
Purl: pkg:deb/ubuntu/gst-plugins-bad1.0@1.26.5-1ubuntu2?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.26.0-1ubuntu2

1.26.2-1ubuntu1

1.26.3-1ubuntu1

1.26.4-1ubuntu1

1.26.5-1ubuntu2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-gst-plugins-bad-1.0",
            "binary_version": "1.26.5-1ubuntu2"
        },
        {
            "binary_name": "gstreamer1.0-opencv",
            "binary_version": "1.26.5-1ubuntu2"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad",
            "binary_version": "1.26.5-1ubuntu2"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad-apps",
            "binary_version": "1.26.5-1ubuntu2"
        },
        {
            "binary_name": "libgstreamer-opencv1.0-0",
            "binary_version": "1.26.5-1ubuntu2"
        },
        {
            "binary_name": "libgstreamer-plugins-bad1.0-0",
            "binary_version": "1.26.5-1ubuntu2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"

Ubuntu:Pro:16.04:LTS

gst-plugins-bad1.0

Package

Name: gst-plugins-bad1.0
Purl: pkg:deb/ubuntu/gst-plugins-bad1.0@1.8.3-1ubuntu0.2+esm1?arch=source&distro=esm-apps/xenial

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

1.7.1-1ubuntu3

1.7.1-1ubuntu4

1.7.2-1ubuntu1

1.7.90-1ubuntu2

1.7.91-1ubuntu1

1.8.0-1ubuntu1

1.8.1-1ubuntu0.1

1.8.2-1ubuntu0.1

1.8.2-1ubuntu0.2

1.8.3-1ubuntu0.2

1.8.3-1ubuntu0.2+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-gst-plugins-bad-1.0",
            "binary_version": "1.8.3-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "gstreamer1.0-hybris",
            "binary_version": "1.8.3-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad",
            "binary_version": "1.8.3-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad-faad",
            "binary_version": "1.8.3-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad-videoparsers",
            "binary_version": "1.8.3-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "libgstreamer-plugins-bad1.0-0",
            "binary_version": "1.8.3-1ubuntu0.2+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"

Ubuntu:Pro:18.04:LTS

gst-plugins-bad1.0

Package

Name: gst-plugins-bad1.0
Purl: pkg:deb/ubuntu/gst-plugins-bad1.0@1.14.5-0ubuntu1~18.04.1+esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.12.3-1ubuntu1

1.12.3-1ubuntu2

1.12.3-2ubuntu1

1.12.4-2ubuntu1

1.12.4-2ubuntu2

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

1.14.5-0ubuntu1~18.04.1+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-gst-plugins-bad-1.0",
            "binary_version": "1.14.5-0ubuntu1~18.04.1+esm1"
        },
        {
            "binary_name": "gstreamer1.0-opencv",
            "binary_version": "1.14.5-0ubuntu1~18.04.1+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad",
            "binary_version": "1.14.5-0ubuntu1~18.04.1+esm1"
        },
        {
            "binary_name": "libgstreamer-opencv1.0-0",
            "binary_version": "1.14.5-0ubuntu1~18.04.1+esm1"
        },
        {
            "binary_name": "libgstreamer-plugins-bad1.0-0",
            "binary_version": "1.14.5-0ubuntu1~18.04.1+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"

Ubuntu:Pro:20.04:LTS

gst-plugins-bad1.0

Package

Name: gst-plugins-bad1.0
Purl: pkg:deb/ubuntu/gst-plugins-bad1.0@1.16.3-0ubuntu1.1+esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.16.1-1ubuntu1

1.16.1-1ubuntu3

1.16.1-1ubuntu4

1.16.1-1ubuntu5

1.16.1-1ubuntu6

1.16.1-1ubuntu8

1.16.2-1ubuntu1

1.16.2-1ubuntu2

1.16.2-2ubuntu1

1.16.2-2.1ubuntu1

1.16.3-0ubuntu1

1.16.3-0ubuntu1.1

1.16.3-0ubuntu1.1+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-gst-plugins-bad-1.0",
            "binary_version": "1.16.3-0ubuntu1.1+esm1"
        },
        {
            "binary_name": "gstreamer1.0-opencv",
            "binary_version": "1.16.3-0ubuntu1.1+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad",
            "binary_version": "1.16.3-0ubuntu1.1+esm1"
        },
        {
            "binary_name": "libgstreamer-opencv1.0-0",
            "binary_version": "1.16.3-0ubuntu1.1+esm1"
        },
        {
            "binary_name": "libgstreamer-plugins-bad1.0-0",
            "binary_version": "1.16.3-0ubuntu1.1+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"

Ubuntu:Pro:22.04:LTS

gst-plugins-bad1.0

Package

Name: gst-plugins-bad1.0
Purl: pkg:deb/ubuntu/gst-plugins-bad1.0@1.20.3-0ubuntu1.1+esm2?arch=source&distro=esm-apps/jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.18.5-1ubuntu1

1.18.5-1ubuntu3

1.20.0-2ubuntu2

1.20.1-1ubuntu2

1.20.3-0ubuntu1

1.20.3-0ubuntu1.1

1.20.3-0ubuntu1.1+esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-gst-plugins-bad-1.0",
            "binary_version": "1.20.3-0ubuntu1.1+esm2"
        },
        {
            "binary_name": "gstreamer1.0-opencv",
            "binary_version": "1.20.3-0ubuntu1.1+esm2"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad",
            "binary_version": "1.20.3-0ubuntu1.1+esm2"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad-apps",
            "binary_version": "1.20.3-0ubuntu1.1+esm2"
        },
        {
            "binary_name": "gstreamer1.0-wpe",
            "binary_version": "1.20.3-0ubuntu1.1+esm2"
        },
        {
            "binary_name": "libgstreamer-opencv1.0-0",
            "binary_version": "1.20.3-0ubuntu1.1+esm2"
        },
        {
            "binary_name": "libgstreamer-plugins-bad1.0-0",
            "binary_version": "1.20.3-0ubuntu1.1+esm2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"

Ubuntu:Pro:24.04:LTS

gst-plugins-bad1.0

Package

Name: gst-plugins-bad1.0
Purl: pkg:deb/ubuntu/gst-plugins-bad1.0@1.24.2-1ubuntu4+esm1?arch=source&distro=esm-apps/noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.22.4-1ubuntu1

1.22.4-1ubuntu2

1.22.4-1ubuntu4

1.22.9-2ubuntu1

1.24.0-1ubuntu3

1.24.0-1ubuntu4

1.24.2-1ubuntu4

1.24.2-1ubuntu4+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-gst-plugins-bad-1.0",
            "binary_version": "1.24.2-1ubuntu4+esm1"
        },
        {
            "binary_name": "gstreamer1.0-opencv",
            "binary_version": "1.24.2-1ubuntu4+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad",
            "binary_version": "1.24.2-1ubuntu4+esm1"
        },
        {
            "binary_name": "gstreamer1.0-plugins-bad-apps",
            "binary_version": "1.24.2-1ubuntu4+esm1"
        },
        {
            "binary_name": "libgstreamer-opencv1.0-0",
            "binary_version": "1.24.2-1ubuntu4+esm1"
        },
        {
            "binary_name": "libgstreamer-plugins-bad1.0-0",
            "binary_version": "1.24.2-1ubuntu4+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1940.json"