CVE-2026-37459

Description

An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.

Affected Platforms

Weakness Type

CWE-400, CWE-191

References

• https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9
• https://access.redhat.com/errata/RHSA-2026:24347
• https://access.redhat.com/errata/RHSA-2026:24370
• https://access.redhat.com/security/cve/CVE-2026-37459
• https://bugzilla.redhat.com/show_bug.cgi?id=2466513
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37459.json