CVE-2023-38406
ffr: Flowspec overflow in bgpd/bgp_flowspec.c
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 24, 2023
Updated · November 21, 2025
Description
A flaw was found in bgpd/bgp_flowspec.c in the FFrouting BGP protocol code. An overflow may occur while processing zero length NLRI messages.
Statement
Red Hat OpenStack Platform does not ship its own version of the frr package, instead using the version from the underlying Red Hat Enterprise Linux. RHOSP is marked as Not Affected as no changes need to be made by the OpenStack engineering team. System administrators of OpenStack deployments should apply updates once available in RHEL.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer