USN-8170-1

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Source
https://ubuntu.com/security/notices/USN-8170-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8170-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8170-1
Upstream
Related
Published
2026-04-13T13:19:14Z
Modified
2026-04-27T18:47:50.132313Z
Summary
corosync vulnerabilities
Details

It was discovered that Corosync incorrectly handled the membership commit token validity check. A remote attacker could use this issue to cause Corosync to crash, resulting in a denial of service, or to possibly obtain a small quantity of sensitive information. (CVE-2026-35091)

It was discovered that Corosync incorrectly handled join message validation. A remote attacker could possibly use this issue to cause Corosync to crash, resulting in a denial of service. (CVE-2026-35092)

References

Affected packages

Ubuntu:22.04:LTS / corosync

Package

Name
corosync
Purl
pkg:deb/ubuntu/corosync@3.1.6-1ubuntu1.2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.6-1ubuntu1.2

Affected versions

3.*
3.1.2-2ubuntu1
3.1.6-1ubuntu1
3.1.6-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "corosync",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "corosync-notifyd",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "corosync-vqsim",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "libcfg7",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "libcmap4",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "libcorosync-common4",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "libcpg4",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "libquorum5",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "libsam4",
            "binary_version": "3.1.6-1ubuntu1.2"
        },
        {
            "binary_name": "libvotequorum8",
            "binary_version": "3.1.6-1ubuntu1.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8170-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-35091"
        },
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-35092"
        }
    ]
}

Ubuntu:24.04:LTS / corosync

Package

Name
corosync
Purl
pkg:deb/ubuntu/corosync@3.1.7-1ubuntu3.2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.7-1ubuntu3.2

Affected versions

3.*
3.1.7-1ubuntu1
3.1.7-1ubuntu2
3.1.7-1ubuntu3
3.1.7-1ubuntu3.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "corosync",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "corosync-notifyd",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "corosync-vqsim",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "libcfg7",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "libcmap4",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "libcorosync-common4",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "libcpg4",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "libquorum5",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "libsam4",
            "binary_version": "3.1.7-1ubuntu3.2"
        },
        {
            "binary_name": "libvotequorum8",
            "binary_version": "3.1.7-1ubuntu3.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8170-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-35091"
        },
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-35092"
        }
    ]
}

Ubuntu:25.10 / corosync

Package

Name
corosync
Purl
pkg:deb/ubuntu/corosync@3.1.9-2ubuntu1.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.9-2ubuntu1.1

Affected versions

3.*
3.1.8-3ubuntu2
3.1.9-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "corosync",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "corosync-notifyd",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "corosync-vqsim",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "libcfg7",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "libcmap4",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "libcorosync-common4",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "libcpg4",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "libquorum5",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "libsam4",
            "binary_version": "3.1.9-2ubuntu1.1"
        },
        {
            "binary_name": "libvotequorum8",
            "binary_version": "3.1.9-2ubuntu1.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8170-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-35091"
        },
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-35092"
        }
    ]
}