USN-8598-1

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Source
https://ubuntu.com/security/notices/USN-8598-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8598-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8598-1
Upstream
Related
Published
2026-07-23T14:26:13Z
Modified
2026-07-24T01:35:02.763978791Z
Summary
rsyslog vulnerabilities
Details

It was discovered that rsyslog incorrectly handled regex-based TCP framing in the imptcp module. A remote attacker could possibly use this issue to cause rsyslog to crash, resulting in a denial of service.

It was discovered that rsyslog incorrectly handled oversized RFC5424 structured data in the mmpstrucdata module. A remote attacker could possibly use this issue to cause rsyslog to crash, resulting in a denial of service. (CVE-2026-61548)

References

Affected packages

Ubuntu:22.04:LTS / rsyslog

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.2112.0-2ubuntu2.4

Affected versions

8.*
8.2102.0-2ubuntu2
8.2110.0-3ubuntu1
8.2110.0-3ubuntu2
8.2110.0-4ubuntu1
8.2112.0-2ubuntu2
8.2112.0-2ubuntu2.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-czmq"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-elasticsearch"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-gnutls"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-gssapi"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-hiredis"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-kafka"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-kubernetes"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-mongodb"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-mysql"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-openssl"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-pgsql"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-relp"
        },
        {
            "binary_version": "8.2112.0-2ubuntu2.4",
            "binary_name": "rsyslog-snmp"
        }
    ]
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-61548",
            "severity": [
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8598-1.json"

Ubuntu:24.04:LTS / rsyslog

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.2312.0-3ubuntu9.3

Affected versions

8.*
8.2306.0-2ubuntu2
8.2312.0-3ubuntu1
8.2312.0-3ubuntu2
8.2312.0-3ubuntu3
8.2312.0-3ubuntu7
8.2312.0-3ubuntu8
8.2312.0-3ubuntu9
8.2312.0-3ubuntu9.1
8.2312.0-3ubuntu9.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-czmq"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-elasticsearch"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-gnutls"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-gssapi"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-hiredis"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-kafka"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-kubernetes"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-mongodb"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-mysql"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-openssl"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-pgsql"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-relp"
        },
        {
            "binary_version": "8.2312.0-3ubuntu9.3",
            "binary_name": "rsyslog-snmp"
        }
    ]
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-61548",
            "severity": [
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8598-1.json"

Ubuntu:26.04:LTS / rsyslog

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.2512.0-1ubuntu4.1

Affected versions

8.*
8.2504.0-1ubuntu2
8.2512.0-1ubuntu2
8.2512.0-1ubuntu3
8.2512.0-1ubuntu4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-clickhouse"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-czmq"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-docker"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-elasticsearch"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-gnutls"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-gssapi"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-hiredis"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-kafka"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-kubernetes"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-mongodb"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-mysql"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-openssl"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-pgsql"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-relp"
        },
        {
            "binary_version": "8.2512.0-1ubuntu4.1",
            "binary_name": "rsyslog-snmp"
        }
    ]
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:26.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-61548",
            "severity": [
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8598-1.json"