Description
Incorrect interaction of the parse_packet() and parse_part_sign_sha256() functions in network.c in collectd 5.7.1 and earlier allows remote attackers to cause a denial of service (infinite loop) of a collectd instance (configured with "SecurityLevel None" and with empty "AuthFile" options) via a crafted UDP packet.
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 13 | collectd | 5.7.2-1 | — |
| Debian 12 | collectd | 5.7.2-1 | — |
| Debian 7 | collectd | 5.1.0-3+deb7u3 | DLA-884-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | collectd | 5.5.1-1ubuntu0.1~esm1 | USN-4793-1 |
| Ubuntu Pro 14.04 LTS | collectd | 5.4.0-3ubuntu2.2+esm1 | USN-4793-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | collectd +44 | 5.7.1-4.el7 | RHSA-2017:1285 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Manager 4 | collectd +43 | 5.7.1-4.el7 | RHSA-2017:1285 |
| Red Hat Openstack-optools 11 | collectd +42 | 5.7.2-1.1.el7ost | RHSA-2017:1787 |
| Red Hat Gluster Storage 3 | collectd +2 | 5.7.2-3.1.el7rhgs | RHSA-2018:2615 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE WebYast 1.3 | collectd | 4.9.4-0.31.1 | SUSE-SU-2017:1365-1 |
| SUSE Lifecycle Management Server 1.3 | collectd | 4.9.4-0.31.1 | SUSE-SU-2017:1365-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.6 | collectd | 5.6.2-r1 | — |
| Alpine v3.5 | collectd | 5.6.2-r1 | — |
Advisories 6
- USN-4793-1 collectd vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2018:2615 Red Hat Security Advisory: collectd security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1787 Red Hat Security Advisory: collectd security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1285 Red Hat Security Advisory: collectd security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DLA-884-1 collectd - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:1365-1 Security update for collectd SUSE / openSUSE Security Updates · Feb 4, 2026
References
- 97321 vdb-entry
- RHSA-2017:1285 vendor-advisory
- https://github.com/collectd/collectd/issues/2174
- RHSA-2018:2615 vendor-advisory
- RHSA-2017:1787 vendor-advisory