CVE-2026-37457

Name	CVE-2026-37457
Description	An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function (bgpd/bgp_flowspec_util.c) of FRRouting (FRR) stable/10.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted FlowSpec component.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
frr (PTS)	bullseye	7.5.1-1.1+deb11u2	vulnerable
	bullseye (security)	7.5.1-1.1+deb11u4	vulnerable
	bookworm, bookworm (security)	8.4.4-1.1~deb12u1	vulnerable
	trixie	10.3-3	vulnerable
	forky, sid	10.6.1-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
frr	source	(unstable)	(unfixed)

https://github.com/FRRouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25c