PT-2026-36779 · Osrg+3 · Gobgp+3

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CVE-2026-7736

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Published

2026-04-01

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Updated

2026-08-24

CVSS v2.0

7.8

High

VectorAV:N/AC:L/Au:N/C:N/I:N/A:C
Name of the Vulnerable Software and Affected Versions osrg GoBGP versions prior to 4.4.0
Description A remote attack can be launched against the parseRibEntry() function in the pkg/packet/mrt/mrt.go file, which may lead to an integer underflow. Integer underflow occurs when an arithmetic operation attempts to create a numeric value smaller than the minimum value the variable can store.
Recommendations Update to version 4.4.0. As a temporary workaround, restrict access to the parseRibEntry() function to minimize the risk of exploitation.

Exploit

Fix

DoS

Integer Underflow

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Weakness Enumeration

Related Identifiers

BDU:2026-14517
CVE-2026-7736
GHSA-HJ4W-QR9J-C4CF
GO-2026-5427
OPENSUSE-SU-2026:21483-1
USN-8348-1

Affected Products

Gobgp
Linuxmint
Red Os
Ubuntu