Summary
The rsyslog packages provide an enhanced, multi-threaded syslog daemon. It supports MySQL, syslog/TCP, RFC 3195, permitted sender lists, filtering on any message part, and fine-grained control over output format.
Security Fix(es):
* rsyslog: rsyslog: Denial of service via heap buffer overflow in RainerScript replace() function (CVE-2026-78002)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 21
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | rsyslog | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-crypto | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-doc | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-elasticsearch | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-gnutls | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-gssapi | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-kafka | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-logrotate | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-mmaudit | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-mmfields | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-mmjsonparse | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-mmkubernetes | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-mmnormalize | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-mmsnmptrapd | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-mysql | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-omamqp1 | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-openssl | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-pgsql | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-relp | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-snmp | 8.2510.0-2.el9_8.2 |
| AlmaLinux · 9 | rsyslog-udpspoof | 8.2510.0-2.el9_8.2 |
Vulnerabilities 1
-
High 7.5
Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function
A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages. This vulnerability arises from an incorrect buffer size calculation durin…