CVE-2025-61101: 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 showvtyextlinkrmtitfaddr 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 azl3 frr 9.1.1-4
Microsoft cbl2 frr 8.5.5-5
Microsoft azl3 frr 9.1.1-5
Microsoft cbl2 frr 8.5.5-4
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
Nov 2, 2025
Data Sourced
via Microsoft·01:02 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·01:02 AM
Affected Software
Updated
via Microsoft·09:02 AM
DescriptionSeverity
Updated
via Microsoft·09:02 AM
Affected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-61101?
CVE-2025-61101 has a severity rating that indicates it can lead to a Denial of Service (DoS) condition.
2
How do I fix CVE-2025-61101?
To fix CVE-2025-61101, update FRRouting to a version beyond 10.4.1.
3
What versions are affected by CVE-2025-61101?
CVE-2025-61101 affects FRRouting versions from 4.0 through 10.4.1.
4
What impacts does CVE-2025-61101 have on network devices?
CVE-2025-61101 can cause network devices to become unresponsive due to a NULL pointer dereference.
5
Is CVE-2025-61101 related to OSPF packets?
Yes, CVE-2025-61101 vulnerability is triggered via crafted OSPF packets.