CVE-2026-7736: Integer Underflow in osrg GoBGP
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.
AI Analysis
Technical Summary
An integer underflow vulnerability exists in the parseRibEntry function of the osrg GoBGP project up to version 4.3.0. This vulnerability can be triggered remotely by manipulating input data, causing an integer underflow condition. The issue is fixed in version 4.4.0 by a specific patch. The vulnerability has a CVSS 4.0 score of 6.9, indicating medium severity. No public exploit code or active exploitation has been reported.
Potential Impact
Successful exploitation of this vulnerability could cause integer underflow, potentially leading to incorrect program behavior or memory corruption within GoBGP. This may affect the stability or reliability of the affected software when processing certain MRT data. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Upgrade osrg GoBGP to version 4.4.0 or later, which contains the official patch (commit 76d911046344a3923cbe573364197aa081944592) that addresses this integer underflow vulnerability. No other mitigation or temporary fixes are indicated.
CVE-2026-7736: Integer Underflow in osrg GoBGP
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An integer underflow vulnerability exists in the parseRibEntry function of the osrg GoBGP project up to version 4.3.0. This vulnerability can be triggered remotely by manipulating input data, causing an integer underflow condition. The issue is fixed in version 4.4.0 by a specific patch. The vulnerability has a CVSS 4.0 score of 6.9, indicating medium severity. No public exploit code or active exploitation has been reported.
Potential Impact
Successful exploitation of this vulnerability could cause integer underflow, potentially leading to incorrect program behavior or memory corruption within GoBGP. This may affect the stability or reliability of the affected software when processing certain MRT data. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Upgrade osrg GoBGP to version 4.4.0 or later, which contains the official patch (commit 76d911046344a3923cbe573364197aa081944592) that addresses this integer underflow vulnerability. No other mitigation or temporary fixes are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-03T16:16:30.716Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f83e68cbff5d8610c9d5a8
Added to database: 5/4/2026, 6:36:24 AM
Last enriched: 5/4/2026, 6:51:57 AM
Last updated: 5/4/2026, 7:36:55 AM
Views: 3
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