Description
rsyslog before 7.6.6 and 8.x before 8.4.1 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash), possibly execute arbitrary code, or have other unspecified impact via a crafted priority (PRI) value that triggers an out-of-bounds array access.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | inetutils | 2:1.9.2.39.3a460-1 | — |
| Debian 14 | rsyslog | 8.4.1-1 | — |
| Debian 13 | inetutils | 2:1.9.2.39.3a460-1 | — |
| Debian 13 | rsyslog | 8.4.1-1 | — |
| Debian 12 | inetutils | 2:1.9.2.39.3a460-1 | — |
| Debian 12 | rsyslog | 8.4.1-1 | — |
| Debian 7 | rsyslog | 5.8.11-3+deb7u1 | DSA-3040-1 |
| Debian 6.0 | rsyslog | 4.6.4-2+deb6u1 | DLA-72-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | rsyslog | 7.4.4-1ubuntu2.3 | USN-2381-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | rsyslog +15 | 7.4.7-7.el7_0 | RHSA-2014:1397 |
| RHEL 6 | rsyslog +6 | 5.8.10-9.el6_6 | RHSA-2014:1671 |
| RHEL 6 | rsyslog7 +7 | 7.4.10-3.el6_6 | RHSA-2014:1654 |
| RHEL 5 | rsyslog5 +5 | 5.8.12-5.el5_11 | RHSA-2014:1671 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | klogd | 1.4.1-786.3 | openSUSE-SU-2024:10155-1 |
| openSUSE Tumbleweed | rsyslog | 8.23.0-2.1 | openSUSE-SU-2024:10498-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | rsyslog +10 | 8.2204.0-3.amzn2023.0.2 | ALAS2023-2023-001 |
| Amazon Linux 2 | rsyslog +17 | 8.24.0-57.amzn2.2.0.1 | ALAS2-2022-1803 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | rsyslog +15 | 7.4.7-7.0.1.el7_0 | ELSA-2014-1397 |
Advisories 12
- RHSA-2014:1671 Red Hat Security Advisory: rsyslog5 and rsyslog security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:1654 Red Hat Security Advisory: rsyslog7 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:1397 Red Hat Security Advisory: rsyslog security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DLA-72-1 rsyslog - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3040-1 rsyslog - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2381-1 rsyslog vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10155-1 klogd-1.4.1-786.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10498-1 rsyslog-8.23.0-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2022-0140 rsyslog: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 17, 2023
- ALAS2023-2023-001 Important: rsyslog security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 22, 2023
- ALAS2-2022-1803 Important: rsyslog security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 7, 2022
- ELSA-2014-1397 Important: rsyslog security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 13, 2014
References
- openSUSE-SU-2014:1297 vendor-advisory
- RHSA-2014:1671 vendor-advisory
- http://advisories.mageia.org/MGASA-2014-0411.html
- SUSE-SU-2014:1294 vendor-advisory
- openSUSE-SU-2014:1298 vendor-advisory
- RHSA-2014:1654 vendor-advisory
- 61720 third-party-advisory
- MDVSA-2015:130 vendor-advisory
- [oss-security] 20140930 vulnerability in rsyslog mailing-list
- 61494 third-party-advisory
- RHSA-2014:1397 vendor-advisory
- [oss-security] 20141003 sysklogd vulnerability (CVE-2014-3634) mailing-list
- http://linux.oracle.com/errata/ELSA-2014-1654
- http://www.rsyslog.com/remote-syslog-pri-vulnerability/
- USN-2381-1 vendor-advisory
- DSA-3040 vendor-advisory
- 61930 third-party-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html