Description
An issue was discovered in GoBGP before 3.35.0. An attacker can cause a crash in the pkg/packet/bgp/bgp.go flowspec parser by sending fewer than 20 bytes in a certain context.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GoBGP | GoBGP | < 3.35.0 | 3.35.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gobgp | 3.35.0-1 | — |
| Debian 13 | gobgp | 3.35.0-1 | — |
| Debian 12 | gobgp | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | gobgp | 3.23.0-1ubuntu0.3+esm2 | USN-7661-1 |
| Ubuntu Pro 22.04 LTS | gobgp | 2.25.0-3ubuntu0.1+esm2 | USN-7661-1 |
| Ubuntu Pro 20.04 LTS | gobgp | 2.12.0-1ubuntu0.1~esm2 | USN-7661-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | gobgp | 1.29-1ubuntu0.1+esm1 | USN-7661-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250422T181640-1.1 | openSUSE-SU-2025:15017-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/osrg/gobgp | all versions | — | GHSA-mfvv-mgf6-q25r |
| Go | github.com/osrg/gobgp/v3 | < 3.35.0 | 3.35.0 | GHSA-mfvv-mgf6-q25r |
Advisories 2
- USN-7661-1 gobgp vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2025:15017-1 govulncheck-vulndb-0.0.20250422T181640-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026