CVE-2025-61105: 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 showvtylinkinfo function at ospfext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
Affected Software
5 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 azl3 frr 9.1.1-5
Microsoft azl3 frr 9.1.1-4
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
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-2025-61105?
CVE-2025-61105 has a medium severity rating as it results in a Denial of Service (DoS).
2
How do I fix CVE-2025-61105?
To fix CVE-2025-61105, update FRRouting from versions 4.0 through 10.4.1 to the latest patched version.
3
What impact does CVE-2025-61105 have on affected systems?
CVE-2025-61105 allows attackers to exploit a NULL pointer dereference causing potential Denial of Service on affected systems.
4
Which versions are affected by CVE-2025-61105?
Versions 4.0 through 10.4.1 of FRRouting are affected by CVE-2025-61105.
5
What component is primarily responsible for CVE-2025-61105?
The show_vty_link_info function in ospf_ext.c is primarily responsible for the NULL pointer dereference in CVE-2025-61105.