UBUNTU-CVE-2021-40648

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Source
https://ubuntu.com/security/CVE-2021-40648
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-40648
Upstream
Published
2022-09-09T18:15:00Z
Modified
2026-05-20T16:05:08Z
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

In man2html 1.6g, a filename can be created to overwrite the previous size parameter of the next chunk and the fd, bk, fd_nextsize, bk_nextsize of the current chunk. The next chunk is then freed later on, causing a freeing of an arbitrary amount of memory.

References

Affected packages

Ubuntu:16.04:LTS
man2html

Package

Name
man2html
Purl
pkg:deb/ubuntu/man2html?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*
1.6g-7
1.6g-8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "man2html",
            "binary_version": "1.6g-8"
        },
        {
            "binary_name": "man2html-base",
            "binary_version": "1.6g-8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json"
Ubuntu:18.04:LTS
man2html

Package

Name
man2html
Purl
pkg:deb/ubuntu/man2html?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.6g-9
1.6g-9ubuntu1
1.6g-11

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "man2html",
            "binary_version": "1.6g-11"
        },
        {
            "binary_name": "man2html-base",
            "binary_version": "1.6g-11"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json"
Ubuntu:20.04:LTS
man2html

Package

Name
man2html
Purl
pkg:deb/ubuntu/man2html?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.6g-12

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "man2html",
            "binary_version": "1.6g-12"
        },
        {
            "binary_name": "man2html-base",
            "binary_version": "1.6g-12"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json"
Ubuntu:22.04:LTS
man2html

Package

Name
man2html
Purl
pkg:deb/ubuntu/man2html?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.6g-14

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "man2html",
            "binary_version": "1.6g-14"
        },
        {
            "binary_name": "man2html-base",
            "binary_version": "1.6g-14"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json"
Ubuntu:24.04:LTS
man2html

Package

Name
man2html
Purl
pkg:deb/ubuntu/man2html?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.6g-14
1.6g-15
1.6g-16

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "man2html",
            "binary_version": "1.6g-16"
        },
        {
            "binary_name": "man2html-base",
            "binary_version": "1.6g-16"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json"
Ubuntu:25.10
man2html

Package

Name
man2html
Purl
pkg:deb/ubuntu/man2html?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.6g-16

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "man2html",
            "binary_version": "1.6g-16"
        },
        {
            "binary_name": "man2html-base",
            "binary_version": "1.6g-16"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json"
Ubuntu:26.04:LTS
man2html

Package

Name
man2html
Purl
pkg:deb/ubuntu/man2html?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.6g-16
1.6g-16build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "man2html",
            "binary_version": "1.6g-16build1"
        },
        {
            "binary_name": "man2html-base",
            "binary_version": "1.6g-16build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40648.json"