UBUNTU-CVE-2026-81886

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Source
https://ubuntu.com/security/CVE-2026-81886
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81886.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-81886
Upstream
Published
2026-09-22T16:18:00Z
Modified
2026-09-24T02:00:14Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Windows 64-bit crash-dump dmp64 parser was vulnerable because the Windows dmp64 parser used an input-controlled physical-memory-run PageCount directly as the bound of a per-page allocation loop. The vulnerability is triggered by opening a small crafted full-memory Windows crash dump. The parser repeatedly allocated and appended page descriptors without validating the count against the dump size. This can cause denial of service through excessive memory consumption and processing time. This issue is fixed in version 6.2.0.

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
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.6-3.1ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "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",
            "binary_version":  "0.9.6-3.1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81886.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
0 Unknown 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_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",
            "binary_version":  "2.3.0+dfsg-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81886.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
0 Unknown 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_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",
            "binary_version":  "4.2.1+dfsg-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81886.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
0 Unknown 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_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",
            "binary_version":  "5.5.0+dfsg-1.1ubuntu3+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81886.json"

Ubuntu:26.04:LTS / radare2

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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_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",
            "binary_version":  "6.0.7+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-81886.json"