UBUNTU-CVE-2020-37239

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2020-37239
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-37239
Upstream
  • CVE-2020-37239
Published
2026-05-16T16:16:00Z
Modified
2026-05-20T22:00:15.424457683Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety checks by exploiting signature overwriting in freed chunks. Attackers can call babl_free() twice on the same pointer without triggering detection, as libc's malloc metadata overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.

References

Affected packages

Ubuntu:16.04:LTS
babl

Package

Name
babl
Purl
pkg:deb/ubuntu/babl?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.1.12-2
0.1.14-1
0.1.16-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.1.16-1",
            "binary_name": "libbabl-0.1-0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json"
Ubuntu:18.04:LTS
babl

Package

Name
babl
Purl
pkg:deb/ubuntu/babl?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.1.30-1
0.1.34-1
0.1.38-1
0.1.44-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.1.44-1",
            "binary_name": "libbabl-0.1-0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json"
Ubuntu:20.04:LTS
babl

Package

Name
babl
Purl
pkg:deb/ubuntu/babl?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.1.62-1
0.1.72-2
0.1.72-3
0.1.72-4
0.1.74-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.1.74-1",
            "binary_name": "gir1.2-babl-0.1"
        },
        {
            "binary_version": "0.1.74-1",
            "binary_name": "libbabl-0.1-0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json"
Ubuntu:22.04:LTS
babl

Package

Name
babl
Purl
pkg:deb/ubuntu/babl?arch=source&distro=jammy

Affected ranges

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

Affected versions

1:0.*
1:0.1.88-1
1:0.1.92-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:0.1.92-1",
            "binary_name": "gir1.2-babl-0.1"
        },
        {
            "binary_version": "1:0.1.92-1",
            "binary_name": "libbabl-0.1-0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json"
Ubuntu:24.04:LTS
babl

Package

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

Affected ranges

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

Affected versions

1:0.*
1:0.1.106-2
1:0.1.106-3
1:0.1.108-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:0.1.108-1",
            "binary_name": "gir1.2-babl-0.1"
        },
        {
            "binary_version": "1:0.1.108-1",
            "binary_name": "libbabl-0.1-0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json"
Ubuntu:25.10
babl

Package

Name
babl
Purl
pkg:deb/ubuntu/babl?arch=source&distro=questing

Affected ranges

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

Affected versions

1:0.*
1:0.1.112-1
1:0.1.114-1
1:0.1.114-2
1:0.1.114-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:0.1.114-3",
            "binary_name": "gir1.2-babl-0.1"
        },
        {
            "binary_version": "1:0.1.114-3",
            "binary_name": "libbabl-0.1-0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json"
Ubuntu:26.04:LTS
babl

Package

Name
babl
Purl
pkg:deb/ubuntu/babl?arch=source&distro=resolute

Affected ranges

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

Affected versions

1:0.*
1:0.1.114-3
1:0.1.116-1
1:0.1.118-1
1:0.1.118-2
1:0.1.120-1
1:0.1.120-2
1:0.1.122-1
1:0.1.124-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:0.1.124-1",
            "binary_name": "gir1.2-babl-0.1"
        },
        {
            "binary_version": "1:0.1.124-1",
            "binary_name": "libbabl-0.1-0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37239.json"