CVE-2025-61106: Null Pointer Dereference
Published Oct 28, 2025
·Updated
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the showvtyextprefprefsid 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 azl3 frr 9.1.1-5
Microsoft cbl2 frr 8.5.5-4
Microsoft azl3 frr 9.1.1-4
Remediation
Event History
Oct 28, 2025
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·03:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Oct 31, 2025
Data Sourced
via Microsoft·01:10 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·01:10 AM
Affected Software
Updated
via Microsoft·08:10 AM
DescriptionSeverity
Updated
via Microsoft·08:10 AM
Affected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-61106?
CVE-2025-61106 has a medium severity rating as it can lead to a Denial of Service (DoS).
2
How do I fix CVE-2025-61106?
To mitigate CVE-2025-61106, upgrade FRRouting to version 10.4.2 or later where the vulnerability is addressed.
3
What systems are affected by CVE-2025-61106?
CVE-2025-61106 affects FRRouting from versions 4.0 to 10.4.1.
4
What kind of attack does CVE-2025-61106 enable?
CVE-2025-61106 allows attackers to perform Denial of Service (DoS) attacks by sending a crafted OSPF packet.
5
What component of FRRouting is impacted by CVE-2025-61106?
CVE-2025-61106 specifically impacts the show_vty_ext_pref_pref_sid function in the ospf_ext.c file.