GoBGP vulnerabilities

Summary

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 UPDATE messages containing 4-byte AS attributes. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-41643) It was discovered that GoBGP incorrectly handled certain malformed BGP UPDATE messages containing SRv6 L3 Service attributes. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-7734) It was discovered that GoBGP incorrectly handled certain malformed BGP UPDATE messages containing Accumulated IGP (AIGP) attributes. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-7735) It was discovered that GoBGP incorrectly handled certain malformed Multi- threaded Routing Toolkit (MRT) routing information entries. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-7736) It was discovered that GoBGP incorrectly handled certain malformed Multi- threaded Routing Toolkit (MRT) headers. A remote attacker could possibly use this issue to caus Affected Ubuntu releases: 26.04, 24.04, 22.04, 20.04, 18.04. CVEs: CVE-2026-7737, CVE-2026-37461, CVE-2026-7734, CVE-2026-41643, CVE-2026-7735, CVE-2026-7736.