gobgp: A vulnerability was determined in osrg GoBGP up to 4.3.0
CVE-2026-7736 is fixed in 4 products on 1 platform, first by gobgpd 1.29-1ubuntu0.1+esm2, released May 7, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gobgp · Debian 14 | 4.4.0-1 | DEBIAN-CVE-2026-7736 | May 15, 2026 |
| gobgpd · Ubuntu 18.04.6 LTS (bionic) | 1.29-1ubuntu0.1+esm2 | gobgpd 1.29-1ubuntu0.1+esm2 | May 7, 2026 |
| gobgpd · Ubuntu 20.04 LTS (focal) | 2.12.0-1ubuntu0.1~esm3 | gobgpd 2.12.0-1ubuntu0.1~esm3 | May 7, 2026 |
| gobgpd · Ubuntu 22.04.1 LTS (jammy) | 2.25.0-3ubuntu0.1+esm4 | gobgpd 2.25.0-3ubuntu0.1+esm4 | May 7, 2026 |
| gobgpd · Ubuntu 24.04.5 LTS (noble) | 3.23.0-1ubuntu0.3+esm4 | gobgpd 3.23.0-1ubuntu0.3+esm4 | May 7, 2026 |
| gobgpd · Ubuntu 26.04.1 LTS (resolute) | 3.36.0-2ubuntu0.1~esm1 | gobgpd 3.36.0-2ubuntu0.1~esm1 | May 7, 2026 |
| golang-github-osrg-gobgp-dev · Ubuntu 18.04.6 LTS (bionic) | 1.29-1ubuntu0.1+esm2 | golang-github-osrg-gobgp-dev 1.29-1ubuntu0.1+esm2 | May 7, 2026 |
| golang-github-osrg-gobgp-dev · Ubuntu 20.04 LTS (focal) | 2.12.0-1ubuntu0.1~esm3 | golang-github-osrg-gobgp-dev 2.12.0-1ubuntu0.1~esm3 | May 7, 2026 |
| golang-github-osrg-gobgp-dev · Ubuntu 22.04.1 LTS (jammy) | 2.25.0-3ubuntu0.1+esm4 | golang-github-osrg-gobgp-dev 2.25.0-3ubuntu0.1+esm4 | May 7, 2026 |
| golang-github-osrg-gobgp-dev · Ubuntu 24.04.5 LTS (noble) | 3.23.0-1ubuntu0.3+esm4 | golang-github-osrg-gobgp-dev 3.23.0-1ubuntu0.3+esm4 | May 7, 2026 |
| golang-github-osrg-gobgp-dev · Ubuntu 26.04.1 LTS (resolute) | 3.36.0-2ubuntu0.1~esm1 | golang-github-osrg-gobgp-dev 3.36.0-2ubuntu0.1~esm1 | May 7, 2026 |
| govulncheck-vulndb · opensuse-leap 16.0 | 0.0.20260723T184607-160000.1.1 | OPENSUSE-SU-2026:21483-1 | Jul 30, 2026 |
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