UBUNTU-CVE-2026-12087

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-12087
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-12087
Upstream
Published
2026-06-15T22:16:00Z
Modified
2026-07-01T13:51:29.763714615Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, packipmreqsource() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imrsourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling packipmreq_source() with a source value shorter than 4 bytes copies adjacent heap memory into the returned packed structure.

References

Affected packages

Ubuntu:16.04:LTS
libsocket-perl

Package

Name
libsocket-perl
Purl
pkg:deb/ubuntu/libsocket-perl?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.020-1
2.021-1
2.021-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsocket-perl",
            "binary_version": "2.021-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:18.04:LTS
libsocket-perl

Package

Name
libsocket-perl
Purl
pkg:deb/ubuntu/libsocket-perl?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.024-1build2
2.027-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsocket-perl",
            "binary_version": "2.027-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:20.04:LTS
libsocket-perl

Package

Name
libsocket-perl
Purl
pkg:deb/ubuntu/libsocket-perl?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.029-1
2.029-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsocket-perl",
            "binary_version": "2.029-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:22.04:LTS
libsocket-perl

Package

Name
libsocket-perl
Purl
pkg:deb/ubuntu/libsocket-perl?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.031-1
2.032-1
2.032-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsocket-perl",
            "binary_version": "2.032-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
perl

Package

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

Affected ranges

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

Affected versions

5.*
5.32.1-3ubuntu3
5.34.0-3ubuntu1
5.34.0-3ubuntu1.1
5.34.0-3ubuntu1.2
5.34.0-3ubuntu1.3
5.34.0-3ubuntu1.4
5.34.0-3ubuntu1.5
5.34.0-3ubuntu1.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libperl5.34",
            "binary_version": "5.34.0-3ubuntu1.7"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.34.0-3ubuntu1.7"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.34.0-3ubuntu1.7"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.34.0-3ubuntu1.7"
        },
        {
            "binary_name": "perl-modules-5.34",
            "binary_version": "5.34.0-3ubuntu1.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:24.04:LTS
libsocket-perl

Package

Name
libsocket-perl
Purl
pkg:deb/ubuntu/libsocket-perl?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.037-1
2.037-1build1
2.037-1build2
2.037-1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsocket-perl",
            "binary_version": "2.037-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
perl

Package

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

Affected ranges

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

Affected versions

5.*
5.36.0-9ubuntu1
5.36.0-10ubuntu1
5.38.2-3
5.38.2-3.2
5.38.2-3.2build1
5.38.2-3.2build2
5.38.2-3.2build2.1
5.38.2-3.2ubuntu0.1
5.38.2-3.2ubuntu0.2
5.38.2-3.2ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libperl5.38t64",
            "binary_version": "5.38.2-3.2ubuntu0.3"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.38.2-3.2ubuntu0.3"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.38.2-3.2ubuntu0.3"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.38.2-3.2ubuntu0.3"
        },
        {
            "binary_name": "perl-modules-5.38",
            "binary_version": "5.38.2-3.2ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:25.10
libsocket-perl

Package

Name
libsocket-perl
Purl
pkg:deb/ubuntu/libsocket-perl?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.038-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsocket-perl",
            "binary_version": "2.038-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
perl

Package

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

Affected ranges

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

Affected versions

5.*
5.40.1-2
5.40.1-3
5.40.1-5
5.40.1-6
5.40.1-6build1
5.40.1-6ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libperl5.40",
            "binary_version": "5.40.1-6ubuntu0.1"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.40.1-6ubuntu0.1"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.40.1-6ubuntu0.1"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.40.1-6ubuntu0.1"
        },
        {
            "binary_name": "perl-modules-5.40",
            "binary_version": "5.40.1-6ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:26.04:LTS
libsocket-perl

Package

Name
libsocket-perl
Purl
pkg:deb/ubuntu/libsocket-perl?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.038-1build1
2.040-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsocket-perl",
            "binary_version": "2.040-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
perl

Package

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

Affected ranges

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

Affected versions

5.*
5.40.1-6build1
5.40.1-7build1
5.40.1-7ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libperl5.40",
            "binary_version": "5.40.1-7ubuntu0.1"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.40.1-7ubuntu0.1"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.40.1-7ubuntu0.1"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.40.1-7ubuntu0.1"
        },
        {
            "binary_name": "perl-modules-5.40",
            "binary_version": "5.40.1-7ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:Pro:14.04:LTS
perl

Package

Name
perl
Purl
pkg:deb/ubuntu/perl?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

5.*
5.14.2-21build1
5.18.1-4
5.18.1-4build1
5.18.1-5
5.18.2-2
5.18.2-2ubuntu1
5.18.2-2ubuntu1.1
5.18.2-2ubuntu1.3
5.18.2-2ubuntu1.4
5.18.2-2ubuntu1.6
5.18.2-2ubuntu1.7
5.18.2-2ubuntu1.7+esm3
5.18.2-2ubuntu1.7+esm4
5.18.2-2ubuntu1.7+esm5
5.18.2-2ubuntu1.7+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcgi-fast-perl",
            "binary_version": "5.18.2-2ubuntu1.7+esm7"
        },
        {
            "binary_name": "libperl5.18",
            "binary_version": "5.18.2-2ubuntu1.7+esm7"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.18.2-2ubuntu1.7+esm7"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.18.2-2ubuntu1.7+esm7"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.18.2-2ubuntu1.7+esm7"
        },
        {
            "binary_name": "perl-modules",
            "binary_version": "5.18.2-2ubuntu1.7+esm7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:Pro:16.04:LTS
perl

Package

Name
perl
Purl
pkg:deb/ubuntu/perl?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

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

Affected versions

5.*
5.20.2-6
5.22.1-3
5.22.1-4
5.22.1-5
5.22.1-7
5.22.1-8
5.22.1-9
5.22.1-9ubuntu0.2
5.22.1-9ubuntu0.3
5.22.1-9ubuntu0.5
5.22.1-9ubuntu0.6
5.22.1-9ubuntu0.9
5.22.1-9ubuntu0.9+esm1
5.22.1-9ubuntu0.9+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libperl5.22",
            "binary_version": "5.22.1-9ubuntu0.9+esm2"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.22.1-9ubuntu0.9+esm2"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.22.1-9ubuntu0.9+esm2"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.22.1-9ubuntu0.9+esm2"
        },
        {
            "binary_name": "perl-modules-5.22",
            "binary_version": "5.22.1-9ubuntu0.9+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:Pro:18.04:LTS
perl

Package

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

Affected ranges

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

Affected versions

5.*
5.26.0-8ubuntu1
5.26.1-2ubuntu1
5.26.1-3
5.26.1-4
5.26.1-4build1
5.26.1-5
5.26.1-6
5.26.1-6ubuntu0.1
5.26.1-6ubuntu0.2
5.26.1-6ubuntu0.3
5.26.1-6ubuntu0.5
5.26.1-6ubuntu0.6
5.26.1-6ubuntu0.7
5.26.1-6ubuntu0.7+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libperl5.26",
            "binary_version": "5.26.1-6ubuntu0.7+esm2"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.26.1-6ubuntu0.7+esm2"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.26.1-6ubuntu0.7+esm2"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.26.1-6ubuntu0.7+esm2"
        },
        {
            "binary_name": "perl-modules-5.26",
            "binary_version": "5.26.1-6ubuntu0.7+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"
Ubuntu:Pro:20.04:LTS
perl

Package

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

Affected ranges

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

Affected versions

5.*
5.28.1-6build1
5.30.0-7
5.30.0-9
5.30.0-9build1
5.30.0-9ubuntu0.2
5.30.0-9ubuntu0.3
5.30.0-9ubuntu0.4
5.30.0-9ubuntu0.5
5.30.0-9ubuntu0.5+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libperl5.30",
            "binary_version": "5.30.0-9ubuntu0.5+esm2"
        },
        {
            "binary_name": "perl",
            "binary_version": "5.30.0-9ubuntu0.5+esm2"
        },
        {
            "binary_name": "perl-base",
            "binary_version": "5.30.0-9ubuntu0.5+esm2"
        },
        {
            "binary_name": "perl-debug",
            "binary_version": "5.30.0-9ubuntu0.5+esm2"
        },
        {
            "binary_name": "perl-modules-5.30",
            "binary_version": "5.30.0-9ubuntu0.5+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12087.json"