Bug 2464871 (CVE-2026-7736)

Summary: CVE-2026-7736 github.com/osrg/gobgp: osrg GoBGP: Integer underflow via manipulation in parseRibEntry function
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: kshier, stcannon, teagle, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in osrg GoBGP. A remote attacker can exploit this vulnerability by executing a manipulation that leads to an integer underflow in the `parseRibEntry` function. This integer underflow can result in low impacts to the system's confidentiality, integrity, and availability.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2480850    
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Description OSIDB Bzimport 2026-05-04 07:02:17 UTC
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.