HIGH 7.5 Microsoft
CVE-2025-61100
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
Microsoft Security Update 2025-Oct: FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
Affected Products
- cbl2 frr 8.5.5-3 on CBL Mariner 2.0
- azl3 frr 9.1.1-3 on Azure Linux 3.0
- cbl2 frr 8.5.5-4 on CBL Mariner 2.0
- azl3 frr 9.1.1-4 on Azure Linux 3.0
- cbl2 frr 8.5.5-5 on CBL Mariner 2.0
- azl3 frr 9.1.1-5 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-61100
- https://nvd.nist.gov/vuln/detail/CVE-2025-61100
This high severity vulnerability with a CVSS score of 7.5 was published on 2025-10-14 via Microsoft. Affected: cbl2 frr 8.5.5-3 on CBL Mariner 2.0, azl3 frr 9.1.1-3 on Azure Linux 3.0, cbl2 frr 8.5.5-4 on CBL Mariner 2.0 and 3 more.
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