UBUNTU-CVE-2026-5124

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Source
https://ubuntu.com/security/CVE-2026-5124
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5124.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-5124
Upstream
Published
2026-03-30T17:16:00Z
Modified
2026-06-03T07:15:34Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A security vulnerability has been detected in osrg GoBGP up to 4.3.0. Affected is the function BGPHeader.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP Header Handler. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitability is told to be difficult. The identifier of the patch is f0f24a2a901cbf159260698211ab15c583ced131. To fix this issue, it is recommended to deploy a patch.

References

Affected packages

Ubuntu:25.10
gobgp

Package

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

Affected ranges

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

Affected versions

3.*
3.35.0-1
3.36.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gobgpd",
            "binary_version": "3.36.0-2"
        },
        {
            "binary_name": "golang-github-osrg-gobgp-dev",
            "binary_version": "3.36.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5124.json"
Ubuntu:Pro:18.04:LTS
gobgp

Package

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

Affected ranges

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

Affected versions

1.*
1.15-1
1.29-1
1.29-1ubuntu0.1+esm1
1.29-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gobgpd",
            "binary_version": "1.29-1ubuntu0.1+esm2"
        },
        {
            "binary_name": "golang-github-osrg-gobgp-dev",
            "binary_version": "1.29-1ubuntu0.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5124.json"
Ubuntu:Pro:20.04:LTS
gobgp

Package

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

Affected ranges

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

Affected versions

1.*
1.33-1
2.*
2.11.0-1
2.12.0-1
2.12.0-1ubuntu0.1~esm1
2.12.0-1ubuntu0.1~esm2
2.12.0-1ubuntu0.1~esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gobgpd",
            "binary_version": "2.12.0-1ubuntu0.1~esm3"
        },
        {
            "binary_name": "golang-github-osrg-gobgp-dev",
            "binary_version": "2.12.0-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5124.json"
Ubuntu:Pro:22.04:LTS
gobgp

Package

Name
gobgp
Purl
pkg:deb/ubuntu/gobgp?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

2.*
2.25.0-2
2.25.0-3
2.25.0-3build1
2.25.0-3ubuntu0.1
2.25.0-3ubuntu0.1+esm1
2.25.0-3ubuntu0.1+esm2
2.25.0-3ubuntu0.1+esm3
2.25.0-3ubuntu0.1+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gobgpd",
            "binary_version": "2.25.0-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "golang-github-osrg-gobgp-dev",
            "binary_version": "2.25.0-3ubuntu0.1+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5124.json"
Ubuntu:Pro:24.04:LTS
gobgp

Package

Name
gobgp
Purl
pkg:deb/ubuntu/gobgp?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

3.*
3.16.0-1build1
3.19.0-1
3.21.0-1
3.23.0-1
3.23.0-1ubuntu0.1
3.23.0-1ubuntu0.2
3.23.0-1ubuntu0.2+esm1
3.23.0-1ubuntu0.3
3.23.0-1ubuntu0.3+esm1
3.23.0-1ubuntu0.3+esm2
3.23.0-1ubuntu0.3+esm3
3.23.0-1ubuntu0.3+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gobgpd",
            "binary_version": "3.23.0-1ubuntu0.3+esm4"
        },
        {
            "binary_name": "golang-github-osrg-gobgp-dev",
            "binary_version": "3.23.0-1ubuntu0.3+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5124.json"
Ubuntu:Pro:26.04:LTS
gobgp

Package

Name
gobgp
Purl
pkg:deb/ubuntu/gobgp?arch=source&distro=esm-apps%2Fresolute

Affected ranges

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

Affected versions

3.*
3.36.0-2
3.36.0-2build1
3.36.0-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gobgpd",
            "binary_version": "3.36.0-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "golang-github-osrg-gobgp-dev",
            "binary_version": "3.36.0-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-5124.json"