ALSA-2026:24347 Important: frr security update

FRRouting is free software that manages TCP/IP based routing protocols. It supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD. Security Fixes: frr: denial of service via crafted FlowSpec component CVE-2026-37457 frr: denial of service via crafted BGP UPDATE message...

Important: frr10 security update

FRRouting is free software that manages TCP/IP based routing protocols. It takes a multi-server and multi-threaded approach to resolve the current complexity of the Internet. FRRouting supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD. FRRouting is a fork of Quagga...

CVE-2026-20171

A vulnerability in the Border Gateway Protocol BGP enforce-first-as feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, remote attacker to trigger BGP peer flaps, resulting in a denial of service DoS condition...

CVE-2026-41642

A flaw was found in GoBGP 4.3.0. A malformed BGP UPDATE with an unrecognized Path Attribute marked as well-known is not rejected cleanly, triggering a nil pointer dereference that crashes the GoBGP daemon. Fixed in GoBGP 4.4.0...

CVE-2026-41643

A flaw was found in GoBGP. A remote attacker could send a specially crafted Border Gateway Protocol BGP UPDATE message that exploits improper handling of 4-byte Autonomous System AS attributes, causing an internal slice index shift. This leads to a runtime error, resulting in a Denial of Service...

SUSE CVE-2026-37462

An integer underflow in the BGPUpdate.DecodeFromBytes function /bgp/bgp.go of gobgp v4.3.0 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : FRR vulnerabilities (USN-8376-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8376-1 advisory. It was discovered that FRR incorrectly handled certain OSPF Traffic Engineering and Segment Routing TLVs. An attacker cou...

GHSA-PW7P-7FQV-HPJ8 GoBGP: Integer underflow in the BGPUpdate.DecodeFromBytes function

An integer underflow in the BGPUpdate.DecodeFromBytes function /bgp/bgp.go of gobgp v4.3.0 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

Integer Underflow (Wrap or Wraparound)

Overview Affected versions of this package are vulnerable to Integer Underflow Wrap or Wraparound in the DecodeFromBytes function. An attacker can trigger a nil pointer dereference and panic by supplying a malicious BGP UPDATE message with a declared section length shorter than the actual data...

DEBIAN-CVE-2026-37460

Missing input validation in the rfapiRibBi2Ri function rfapirib.c of FRRouting FRR stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

CVE-2026-37460

Missing input validation in the rfapiRibBi2Ri function rfapirib.c of FRRouting FRR stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

USN-8376-1: FRR vulnerabilities

It was discovered that FRR incorrectly handled certain OSPF Traffic Engineering and Segment Routing TLVs. An attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service. CVE-2026-28532 It was discovered that FRR incorrectly handled certain BGP FlowSpec component...

USN-8376-1 frr vulnerabilities

It was discovered that FRR incorrectly handled certain OSPF Traffic Engineering and Segment Routing TLVs. An attacker could possibly use this issue to cause FRR to crash, resulting in a denial of service. CVE-2026-28532 It was discovered that FRR incorrectly handled certain BGP FlowSpec component...

USN-8348-1: GoBGP vulnerabilities

It was discovered that GoBGP incorrectly handled certain specially crafted BGP UPDATE messages. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. CVE-2026-37461 Yanlei Wang discovered that GoBGP incorrectly handled certain malformed BGP...

EUVD-2026-34083

Missing input validation in the rfapiRibBi2Ri function rfapirib.c of FRRouting FRR stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

CVE-2026-37462

An integer underflow in the BGPUpdate.DecodeFromBytes function /bgp/bgp.go of gobgp v4.3.0 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

PT-2026-45955

Name of the Vulnerable Software and Affected Versions gobgp version 4.3.0 Description An integer underflow occurs in the BGPUpdate.DecodeFromBytes function located in /bgp/bgp.go. This allows attackers to cause a Denial of Service DoS by supplying a specially crafted BGP UPDATE message...

CVE-2026-37460

Missing input validation in the rfapiRibBi2Ri function rfapirib.c of FRRouting FRR stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

CVE-2026-37462

An integer underflow in the BGPUpdate.DecodeFromBytes function /bgp/bgp.go of gobgp v4.3.0 allows attackers to cause a Denial of Service DoS via supplying a crafted BGP UPDATE message...

CVE-2026-37460

The FRRouting (FRR) software (versions stable/10.0 through stable/10.6 ) is vulnerable to a Denial of Service (DoS) attack due to missing input validation in the rfapiRibBi2Ri() function located in rfapi_rib.c . An attacker can trigger this vulnerability by supplying a crafted BGP UPDATE message ...