Description
A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| osrg | GoBGP | 4.0, 4.1, 4.2, 4.3.0 | 4.4.0 |
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 | 4.4.0-1 | — |
| Debian 13 | gobgp | No fix yet | — |
| Debian 12 | gobgp | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | gobgp | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | gobgp | 3.36.0-2ubuntu0.1~esm1 | USN-8348-1 |
| Ubuntu Pro 24.04 LTS | gobgp | 3.23.0-1ubuntu0.3+esm4 | USN-8348-1 |
| Ubuntu Pro 22.04 LTS | gobgp | 2.25.0-3ubuntu0.1+esm4 | USN-8348-1 |
| Ubuntu Pro 20.04 LTS | gobgp | 2.12.0-1ubuntu0.1~esm3 | USN-8348-1 |
| Ubuntu Pro 18.04 LTS | gobgp | 1.29-1ubuntu0.1+esm2 | USN-8348-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/osrg/gobgp/v4 | < 4.4.0 | 4.4.0 | GHSA-hj4w-qr9j-c4cf |
Advisories 2
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- USN-8348-1 gobgp vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
References
- VDB-360911 | osrg GoBGP mrt.go parseRibEntry integer underflow vdb-entry technical-description
- VDB-360911 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #807604 | osrg GoBGP <= 4.3.0 Integer Underflow third-party-advisory
- https://github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592 patch
- https://github.com/osrg/gobgp/releases/tag/v4.4.0 patch
- https://github.com/osrg/gobgp/ product