GHSA-FRRJ-87JH-2772 GoBGP confederation validation panics on empty AS_PATH attribute

Found through variant analysis based on CVE-2026-41643 Summary GoBGP accepts a zero-length ASPATH during UPDATE decoding and later panics while validating that attribute for a confederation eBGP peer. The vulnerable path is in the BGP UPDATE validator: a malformed UPDATE that should be rejected a...

Improper Validation of Array Index

Overview Affected versions of this package are vulnerable to Improper Validation of Array Index in the validation process for BGP UPDATE messages containing an empty ASPATH attribute. An attacker can cause a panic and terminate the peer session by sending a malformed UPDATE with a zero-length...

Improper Validation of Array Index

Overview Affected versions of this package are vulnerable to Improper Validation of Array Index in the validation process for BGP UPDATE messages containing an empty ASPATH attribute. An attacker can cause a panic and terminate the peer session by sending a malformed UPDATE with a zero-length...

CVE-2026-49943

A flaw was found in the BIRD Internet Routing Daemon. An established BGP Border Gateway Protocol peer can send a specially crafted BGP UPDATE message containing an unusually long ASPATH Autonomous System Path attribute. When a BIRD filter evaluates an AS path mask expression, this can lead to a...

SUSE CVE-2026-49943

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

Linux Distros Unpatched Vulnerability : CVE-2026-49943

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The...

CVE-2026-49943

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

CVE-2026-49943

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

CVE-2026-49943

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

EUVD-2026-33980

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

CVE-2026-49943

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

CVE-2026-49943

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

CVE-2026-49943

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP ASPATH mask matching implementation in nest/a-path.c. The aspathmatch function uses a fixed-size stack array of 2048 + 1 pmpos entries, while parsepath expands ASPATH segments from a received BGP...

PT-2026-45806

CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP AS PATH mask matching implementation in nest/a-path.c. The as path match function uses a fixed-size stack array of 2048 + 1 pm pos entries, while parse path expands AS PATH segments from a receive...

CVE-2026-48691

FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP ASPATH attribute encoder. In src/bgpprotocol.hpp, the IPv4UnicastAnnounce::getattributes function computes attributelength as 'sizeofbgpaspathsegmentelementt + this-aspathasns.size sizeofuint32t' and stores it in a...

CVE-2026-48691

FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP ASPATH attribute encoder. In src/bgpprotocol.hpp, the IPv4UnicastAnnounce::getattributes function computes attributelength as 'sizeofbgpaspathsegmentelementt + this-aspathasns.size sizeofuint32t' and stores it in a...

EUVD-2026-31898

FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP ASPATH attribute encoder. In src/bgpprotocol.hpp, the IPv4UnicastAnnounce::getattributes function computes attributelength as 'sizeofbgpaspathsegmentelementt + this-aspathasns.size sizeofuint32t' and stores it in a...

CVE-2026-48691

FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP ASPATH attribute encoder. In src/bgpprotocol.hpp, the IPv4UnicastAnnounce::getattributes function computes attributelength as 'sizeofbgpaspathsegmentelementt + this-aspathasns.size sizeofuint32t' and stores it in a...

CVE-2026-48691

FastNetMon Community Edition through 1.2.9 has an integer overflow in the BGP AS_PATH encoder (src/bgp_protocol.hpp, IPv4UnicastAnnounce::get_attributes). attribute_length and path_segment_length are stored in uint8_t, so AS_PATHs >63 ASNs truncate to 0–255 for sizing but the full data is writ...

CVE-2026-48691

FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP ASPATH attribute encoder. In src/bgpprotocol.hpp, the IPv4UnicastAnnounce::getattributes function computes attributelength as 'sizeofbgpaspathsegmentelementt + this-aspathasns.size sizeofuint32t' and stores it in a...