CVE-2023-41909: Debian Linux

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 37 only; version 38 only; version 39 only
• Frrouting Frrouting: up to and including 9.0

Published 2023-09-05. Last modified 2026-06-17.