A unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module. A crafted input sequence during oversize-frame recovery can cause an invalid internal message length and terminate rsyslogd. No confidentiality or integrity impact, privilege escalation, or code execution has been identified. imtcp and the default imptcp framing modes are not affected.
https://bugzilla.redhat.com/show_bug.cgi?id=2502868
https://access.redhat.com/security/cve/CVE-2026-19654
https://access.redhat.com/errata/RHSA-2026:91582
https://access.redhat.com/errata/RHSA-2026:87408
https://access.redhat.com/errata/RHSA-2026:86124
https://access.redhat.com/errata/RHSA-2026:84576
https://access.redhat.com/errata/RHSA-2026:84571
https://access.redhat.com/errata/RHSA-2026:80817
https://access.redhat.com/errata/RHSA-2026:71603
https://access.redhat.com/errata/RHSA-2026:67584