RHSA-2026:99690: Important: libpcap security update
Important: libpcap security update
Other sources
The libpcap packages provide a portable framework for low-level network monitoring. The libpcap library provides network statistics collection, security monitoring, and network debugging.Security Fix(es): libpcap: libpcap: Denial of Service via infinite loop in BPF interpreter (CVE-2026-6554) 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.
— Red Hat
Affected Software
Event History
Frequently Asked Questions
Which systems are covered by this advisory?
The advisory applies to Red Hat Enterprise Linux for IBM z Systems, Power little endian, ARM 64, and x86_64, as well as Red Hat CodeReady Linux Builder for those architectures.
What is the impact of the vulnerability?
The issue is a denial of service caused by an infinite loop in the libpcap BPF interpreter. Affected systems may become unavailable when the vulnerable interpreter processes the triggering input.