UBUNTU-CVE-2026-48863

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Source
https://ubuntu.com/security/CVE-2026-48863
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-48863
Upstream
Published
2026-07-16T01:16:00Z
Modified
2026-07-22T11:40:09Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.

References

Affected packages

Ubuntu:20.04:LTS
libsolv

Package

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

Affected ranges

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

Affected versions

0.*
0.6.35-2ubuntu1
0.6.35-2ubuntu2
0.6.36-1
0.6.36-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsolv-perl",
            "binary_version": "0.6.36-2"
        },
        {
            "binary_name": "libsolv-tools",
            "binary_version": "0.6.36-2"
        },
        {
            "binary_name": "libsolv0",
            "binary_version": "0.6.36-2"
        },
        {
            "binary_name": "libsolvext0",
            "binary_version": "0.6.36-2"
        },
        {
            "binary_name": "python3-solv",
            "binary_version": "0.6.36-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"
Ubuntu:22.04:LTS
libsolv

Package

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

Affected ranges

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

Affected versions

0.*
0.7.17-2
0.7.20-1
0.7.20-1build2
0.7.20-1ubuntu0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsolv-perl",
            "binary_version": "0.7.20-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "libsolv-tools",
            "binary_version": "0.7.20-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "libsolv1",
            "binary_version": "0.7.20-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "libsolvext1",
            "binary_version": "0.7.20-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "python3-solv",
            "binary_version": "0.7.20-1ubuntu0.22.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"
Ubuntu:24.04:LTS
libsolv

Package

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

Affected ranges

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

Affected versions

0.*
0.7.24-1
0.7.25-1
0.7.26-1
0.7.26-2
0.7.27-1
0.7.27-2
0.7.27-2build1
0.7.28-1
0.7.28-1build1
0.7.28-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsolv-perl",
            "binary_version": "0.7.28-1build2"
        },
        {
            "binary_name": "libsolv-tools",
            "binary_version": "0.7.28-1build2"
        },
        {
            "binary_name": "libsolv1",
            "binary_version": "0.7.28-1build2"
        },
        {
            "binary_name": "libsolvext1",
            "binary_version": "0.7.28-1build2"
        },
        {
            "binary_name": "python3-solv",
            "binary_version": "0.7.28-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"
Ubuntu:25.10
libsolv

Package

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

Affected ranges

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

Affected versions

0.*
0.7.31-1build1
0.7.32-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsolv-perl",
            "binary_version": "0.7.32-1"
        },
        {
            "binary_name": "libsolv-tools",
            "binary_version": "0.7.32-1"
        },
        {
            "binary_name": "libsolv1",
            "binary_version": "0.7.32-1"
        },
        {
            "binary_name": "libsolvext1",
            "binary_version": "0.7.32-1"
        },
        {
            "binary_name": "python3-solv",
            "binary_version": "0.7.32-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"
Ubuntu:26.04:LTS
libsolv

Package

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

Affected ranges

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

Affected versions

0.*
0.7.32-1
0.7.35-1
0.7.35-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsolv-perl",
            "binary_version": "0.7.35-1build1"
        },
        {
            "binary_name": "libsolv-tools",
            "binary_version": "0.7.35-1build1"
        },
        {
            "binary_name": "libsolv1",
            "binary_version": "0.7.35-1build1"
        },
        {
            "binary_name": "libsolvext1",
            "binary_version": "0.7.35-1build1"
        },
        {
            "binary_name": "python3-solv",
            "binary_version": "0.7.35-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"
Ubuntu:Pro:16.04:LTS
libsolv

Package

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

Affected ranges

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

Affected versions

0.*
0.6.11-1
0.6.11-1build1
0.6.11-1.1
0.6.11-1.1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsolv-perl",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsolv-tools",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsolv0",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsolvext0",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "python-solv",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "python3-solv",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"
Ubuntu:Pro:18.04:LTS
libsolv

Package

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

Affected ranges

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

Affected versions

0.*
0.6.28-2build1
0.6.30-1build1
0.6.30-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libsolv-perl",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsolv-tools",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsolv0",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libsolvext0",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "python-solv",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "python3-solv",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48863.json"