UBUNTU-CVE-2018-20538

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Source
https://ubuntu.com/security/CVE-2018-20538
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-20538
Upstream
Published
2018-12-28T16:29:00Z
Modified
2025-10-24T04:47:18Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Assembler (NASM) 2.14rc16 that will cause a denial of service during certain finishes tests.

References

Affected packages

Ubuntu:16.04:LTS

nasm

Package

Name
nasm
Purl
pkg:deb/ubuntu/nasm@2.11.08-1ubuntu0.1?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*

2.11.06-1really2.11.05-1
2.11.08-1
2.11.08-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.11.08-1ubuntu0.1",
            "binary_name": "nasm"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json"

Ubuntu:18.04:LTS

nasm

Package

Name
nasm
Purl
pkg:deb/ubuntu/nasm@2.13.02-0.1?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*

2.13.01-2
2.13.02-0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.13.02-0.1",
            "binary_name": "nasm"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json"

Ubuntu:20.04:LTS

nasm

Package

Name
nasm
Purl
pkg:deb/ubuntu/nasm@2.14.02-1?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*

2.14.02-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.14.02-1",
            "binary_name": "nasm"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json"

Ubuntu:22.04:LTS

nasm

Package

Name
nasm
Purl
pkg:deb/ubuntu/nasm@2.15.05-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*

2.15.05-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.15.05-1",
            "binary_name": "nasm"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json"

Ubuntu:24.04:LTS

nasm

Package

Name
nasm
Purl
pkg:deb/ubuntu/nasm@2.16.01-1build1?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*

2.16.01-1
2.16.01-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.16.01-1build1",
            "binary_name": "nasm"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json"

Ubuntu:25.04

nasm

Package

Name
nasm
Purl
pkg:deb/ubuntu/nasm@2.16.03-1?arch=source&distro=plucky

Affected ranges

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

Affected versions

2.*

2.16.03-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.16.03-1",
            "binary_name": "nasm"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json"

Ubuntu:25.10

nasm

Package

Name
nasm
Purl
pkg:deb/ubuntu/nasm@2.16.03-1?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*

2.16.03-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.16.03-1",
            "binary_name": "nasm"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20538.json"