UBUNTU-CVE-2026-79590

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Source
https://ubuntu.com/security/CVE-2026-79590
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79590.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-79590
Upstream
Published
2026-09-14T00:00:00Z
Modified
2026-09-14T11:17:26Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An attacker can provide a specially crafted Ruby source file that triggers the parser to pass a NULL pointer to nonnull string handling functions, resulting in undefined behavior and application crash.

References

Affected packages

Ubuntu:16.04:LTS
mruby

Package

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

Affected ranges

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

Affected versions

1.*
1.1.0+20150817+gita1731254-1
1.1.0+20150906+git1cbbb7e1-1
1.2.0+20160315+git4f20d58a-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mruby",
            "binary_version": "1.2.0+20160315+git4f20d58a-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79590.json"
Ubuntu:18.04:LTS
mruby

Package

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

Affected ranges

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

Affected versions

1.*
1.3.0-1
1.3.0+20170925+git38185028-1
1.3.0+20171029+git77edafb0-1
1.4.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mruby",
            "binary_version": "1.4.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79590.json"
Ubuntu:20.04:LTS
mruby

Package

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

Affected ranges

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

Affected versions

2.*
2.0.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mruby",
            "binary_version": "2.0.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79590.json"
Ubuntu:22.04:LTS
mruby

Package

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

Affected ranges

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

Affected versions

2.*
2.1.2-3
3.*
3.0.0-1
3.0.0-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mruby",
            "binary_version": "3.0.0-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79590.json"
Ubuntu:24.04:LTS
mruby

Package

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

Affected ranges

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

Affected versions

3.*
3.2.0-1
3.2.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mruby",
            "binary_version": "3.2.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79590.json"
Ubuntu:26.04:LTS
mruby

Package

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

Affected ranges

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

Affected versions

3.*
3.3.0-1
3.4.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mruby",
            "binary_version": "3.4.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79590.json"