Ubuntu USN · USN-8598-1

rsyslog vulnerabilities

Published: Thu, 23 Jul 2026 14:26

CVE-2026-61548

Summary

Several security issues were fixed in rsyslog.

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)

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu jammy

rsyslog→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-czmq→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-czmq
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-elasticsearch→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-elasticsearch
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-gnutls→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-gnutls
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-gssapi→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-gssapi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-hiredis→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-hiredis
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-kafka→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-kafka
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-kubernetes→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-kubernetes
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-mongodb→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-mongodb
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-mysql→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-mysql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-openssl→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-openssl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-pgsql→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-pgsql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-relp→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-relp
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-snmp→8.2112.0-2ubuntu2.4apt_upgrade
Standard apt upgrade. Install 8.2112.0-2ubuntu2.4 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-snmp
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu noble

rsyslog→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-czmq→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-czmq
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-elasticsearch→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-elasticsearch
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-gnutls→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-gnutls
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-gssapi→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-gssapi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-hiredis→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-hiredis
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-kafka→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-kafka
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-kubernetes→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-kubernetes
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-mongodb→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-mongodb
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-mysql→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-mysql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-openssl→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-openssl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-pgsql→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-pgsql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-relp→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-relp
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-snmp→8.2312.0-3ubuntu9.3apt_upgrade
Standard apt upgrade. Install 8.2312.0-3ubuntu9.3 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-snmp
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu resolute

rsyslog→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-clickhouse→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-clickhouse
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-czmq→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-czmq
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-doc→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-doc
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-docker→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-docker
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-elasticsearch→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-elasticsearch
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-gnutls→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-gnutls
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-gssapi→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-gssapi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-hiredis→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-hiredis
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-kafka→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-kafka
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-kubernetes→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-kubernetes
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-mongodb→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-mongodb
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-mysql→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-mysql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-openssl→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-openssl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-pgsql→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-pgsql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-relp→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-relp
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
rsyslog-snmp→8.2512.0-1ubuntu4.1apt_upgrade
Standard apt upgrade. Install 8.2512.0-1ubuntu4.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y rsyslog-snmp
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

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