gobgp: A vulnerability was found in osrg GoBGP up to 4.3.0
CVE-2026-7735 is fixed in 3 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: Routine.
A vulnerability was found in osrg GoBGP up to 4.3.0. Affected is the function PathAttributeAigp.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component AIGP Attribute Parser. Performing a manipulation results in buffer overflow. It is possible to initiate the attack remotely. Upgrading to version 4.4.0 is able to address this issue. The patch is named 51ad1ada06cb41ce47b7066799981816f50b7ced. The affected component should be upgraded.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gobgp · Debian 14 | 4.4.0-1 | DEBIAN-CVE-2026-7735 | 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 |
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