UBUNTU-CVE-2026-56788

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Source
https://ubuntu.com/security/CVE-2026-56788
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56788.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-56788
Upstream
  • CVE-2026-56788
Published
2026-06-25T19:16:00Z
Modified
2026-06-29T23:19:15.777815158Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L CVSS Calculator
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H CVSS Calculator
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

RTKLIB through 2.4.3 contains an out-of-bounds read vulnerability in getcodepri function when processing unrecognized RINEX observation codes, allowing attackers to trigger denial of service. Crafted RINEX files with unknown observation types cause negative array indexing into the codepris table, resulting in reliable crashes and potential memory disclosure of adjacent global data.

References

Affected packages

Ubuntu:18.04:LTS
rtklib

Package

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

Affected ranges

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

Affected versions

2.*
2.4.3+dfsg1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rtklib",
            "binary_version": "2.4.3+dfsg1-1"
        },
        {
            "binary_name": "rtklib-qt",
            "binary_version": "2.4.3+dfsg1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56788.json"
Ubuntu:20.04:LTS
rtklib

Package

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

Affected ranges

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

Affected versions

2.*
2.4.3+dfsg1-1
2.4.3+dfsg1-2.1
2.4.3+dfsg1-2.1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rtklib",
            "binary_version": "2.4.3+dfsg1-2.1build1"
        },
        {
            "binary_name": "rtklib-qt",
            "binary_version": "2.4.3+dfsg1-2.1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56788.json"
Ubuntu:22.04:LTS
rtklib

Package

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

Affected ranges

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

Affected versions

2.*
2.4.3+dfsg1-2.1build1
2.4.3.b34+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librtklib1",
            "binary_version": "2.4.3.b34+dfsg-1"
        },
        {
            "binary_name": "rtklib",
            "binary_version": "2.4.3.b34+dfsg-1"
        },
        {
            "binary_name": "rtklib-qt",
            "binary_version": "2.4.3.b34+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56788.json"
Ubuntu:24.04:LTS
rtklib

Package

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

Affected ranges

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

Affected versions

2.*
2.4.3.b34+dfsg-1
2.4.3.b34+dfsg-1build1
2.4.3.b34+dfsg-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librtklib1",
            "binary_version": "2.4.3.b34+dfsg-1build2"
        },
        {
            "binary_name": "rtklib",
            "binary_version": "2.4.3.b34+dfsg-1build2"
        },
        {
            "binary_name": "rtklib-qt",
            "binary_version": "2.4.3.b34+dfsg-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56788.json"
Ubuntu:25.10
rtklib

Package

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

Affected ranges

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

Affected versions

2.*
2.4.3.b34+dfsg-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librtklib1",
            "binary_version": "2.4.3.b34+dfsg-1build2"
        },
        {
            "binary_name": "rtklib",
            "binary_version": "2.4.3.b34+dfsg-1build2"
        },
        {
            "binary_name": "rtklib-qt",
            "binary_version": "2.4.3.b34+dfsg-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56788.json"
Ubuntu:26.04:LTS
rtklib

Package

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

Affected ranges

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

Affected versions

2.*
2.4.3.b34+dfsg-1build2
2.4.3.b34+dfsg-1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "librtklib1",
            "binary_version": "2.4.3.b34+dfsg-1build3"
        },
        {
            "binary_name": "rtklib",
            "binary_version": "2.4.3.b34+dfsg-1build3"
        },
        {
            "binary_name": "rtklib-qt",
            "binary_version": "2.4.3.b34+dfsg-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56788.json"