UBUNTU-CVE-2021-4021

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Source
https://ubuntu.com/security/CVE-2021-4021
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-4021
Upstream
Published
2022-02-24T19:15:00Z
Modified
2026-05-20T16:05:12.515033121Z
Severity
  • 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

A vulnerability was found in Radare2 in versions prior to 5.6.2, 5.6.0, 5.5.4 and 5.5.2. Mapping a huge section filled with zeros of an ELF64 binary for MIPS architecture can lead to uncontrolled resource consumption and DoS.

References

Affected packages

Ubuntu:16.04:LTS
radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.9.6-3.1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.6-3.1ubuntu1",
            "binary_name": "libradare2-0.9.6"
        },
        {
            "binary_version": "0.9.6-3.1ubuntu1",
            "binary_name": "libradare2-common"
        },
        {
            "binary_version": "0.9.6-3.1ubuntu1",
            "binary_name": "radare2"
        },
        {
            "binary_version": "0.9.6-3.1ubuntu1",
            "binary_name": "radare2-plugins"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json"
Ubuntu:25.10
radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2?arch=source&distro=questing

Affected ranges

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

Affected versions

5.*
5.9.8+dfsg-2
5.9.8+dfsg-2ubuntu0.25.10.1
5.9.8+dfsg-2ubuntu0.25.10.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.9.8+dfsg-2ubuntu0.25.10.2",
            "binary_name": "libradare2-5.0.0t64"
        },
        {
            "binary_version": "5.9.8+dfsg-2ubuntu0.25.10.2",
            "binary_name": "libradare2-common"
        },
        {
            "binary_version": "5.9.8+dfsg-2ubuntu0.25.10.2",
            "binary_name": "radare2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json"
Ubuntu:26.04:LTS
radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2?arch=source&distro=resolute

Affected ranges

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

Affected versions

5.*
5.9.8+dfsg-2
6.*
6.0.4+dfsg-1
6.0.7+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.0.7+ds-1",
            "binary_name": "libradare2-6.0.0t64"
        },
        {
            "binary_version": "6.0.7+ds-1",
            "binary_name": "libradare2-common"
        },
        {
            "binary_version": "6.0.7+ds-1",
            "binary_name": "radare2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json"
Ubuntu:Pro:18.04:LTS
radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1.*
1.6.0+dfsg-1
2.*
2.0.0+dfsg-1
2.1.0+dfsg-1
2.3.0+dfsg-1
2.3.0+dfsg-2
2.3.0+dfsg-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.3.0+dfsg-2ubuntu0.1~esm1",
            "binary_name": "libradare2-2.3"
        },
        {
            "binary_version": "2.3.0+dfsg-2ubuntu0.1~esm1",
            "binary_name": "libradare2-common"
        },
        {
            "binary_version": "2.3.0+dfsg-2ubuntu0.1~esm1",
            "binary_name": "radare2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json"
Ubuntu:Pro:20.04:LTS
radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

3.*
3.2.1+dfsg-5build1
4.*
4.0.0+dfsg-1
4.2.1+dfsg-1
4.2.1+dfsg-2
4.2.1+dfsg-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.2.1+dfsg-2ubuntu0.1~esm1",
            "binary_name": "libradare2-4.2.1"
        },
        {
            "binary_version": "4.2.1+dfsg-2ubuntu0.1~esm1",
            "binary_name": "libradare2-common"
        },
        {
            "binary_version": "4.2.1+dfsg-2ubuntu0.1~esm1",
            "binary_name": "radare2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json"
Ubuntu:Pro:24.04:LTS
radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

5.*
5.5.0+dfsg-1ubuntu1
5.5.0+dfsg-1.1ubuntu2
5.5.0+dfsg-1.1ubuntu3
5.5.0+dfsg-1.1ubuntu3+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.5.0+dfsg-1.1ubuntu3+esm1",
            "binary_name": "libradare2-5.0.0t64"
        },
        {
            "binary_version": "5.5.0+dfsg-1.1ubuntu3+esm1",
            "binary_name": "libradare2-common"
        },
        {
            "binary_version": "5.5.0+dfsg-1.1ubuntu3+esm1",
            "binary_name": "radare2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json"