CVE-2026-7735

Publication date 4 May 2026

Last updated 6 June 2026

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gobgp	26.04 LTS resolute	Fixed 3.36.0-2ubuntu0.1~esm1
	25.10 questing	Vulnerable
	24.04 LTS noble	Fixed 3.23.0-1ubuntu0.3+esm4
	22.04 LTS jammy	Fixed 2.25.0-3ubuntu0.1+esm4
	20.04 LTS focal	Fixed 2.12.0-1ubuntu0.1~esm3
	18.04 LTS bionic	Fixed 1.29-1ubuntu0.1+esm2

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
gobgp	Upstream: 51ad1ad

Severity score breakdown

Parameter	Value
Base score	7.3 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	Low
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

Related Ubuntu Security Notices (USN)

USN-8348-1
GoBGP vulnerabilities
3 June 2026