CVE-2025-61102: Null Pointer Dereference
Published Oct 27, 2025
·Updated
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the showvtyextlinkadjsid function at ospfext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
Affected Software
8 affected componentsFixes available
Frrouting FRR>=4.0<=10.4.1
Frrouting FRRouting>=4.0<=10.4.1
Microsoft azl3 frr 9.1.1-3
Microsoft cbl2 frr 8.5.5-3
Microsoft cbl2 frr 8.5.5-5
Microsoft cbl2 frr 8.5.5-4
Microsoft azl3 frr 9.1.1-4
Microsoft azl3 frr 9.1.1-5
Remediation
Event History
Oct 27, 2025
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·08:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Oct 31, 2025
Data Sourced
via Microsoft·01:11 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·01:11 AM
Affected Software
Updated
via Microsoft·08:11 AM
DescriptionSeverity
Updated
via Microsoft·08:11 AM
Affected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-61102?
CVE-2025-61102 has a severity rating of medium, as it can lead to a Denial of Service (DoS).
2
How do I fix CVE-2025-61102?
To fix CVE-2025-61102, upgrade to FRRouting version 10.4.2 or later, which contains the patch for this vulnerability.
3
What type of vulnerability is CVE-2025-61102?
CVE-2025-61102 is a NULL pointer dereference vulnerability in the FRRouting software.
4
Which versions of FRRouting are affected by CVE-2025-61102?
FRRouting versions from 4.0 to 10.4.1 are affected by CVE-2025-61102.
5
What is the impact of CVE-2025-61102?
The impact of CVE-2025-61102 is a potential Denial of Service, which can cause the affected service to become unavailable.