CVE-2025-61103: Null Pointer Dereference
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the showvtyextlinklanadjsid function at ospfext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/frrto a version that resolves this vulnerability.Fixed in 8.1-1ubuntu1.14 - Upgrade
Upgrade
ubuntu/frrto a version that resolves this vulnerability.Fixed in 8.4.4-1.1ubuntu6.5 - Upgrade
Upgrade
ubuntu/frrto a version that resolves this vulnerability.Fixed in 10.4.1-3ubuntu1.1 - Upgrade
Upgrade
ubuntu/frrto a version that resolves this vulnerability.Fixed in 10.5.1-1ubuntu2 - Upgrade
Upgrade
debian/frrto a version that resolves this vulnerability.Fixed in 8.4.4-1.1~deb12u2Fixed in 10.3-3+deb13u1Fixed in 10.7.1-7
Event History
Frequently Asked Questions
What is the severity of CVE-2025-61103?
CVE-2025-61103 has a severity rating that indicates a medium risk due to its potential to cause a Denial of Service (DoS).
How do I fix CVE-2025-61103?
To fix CVE-2025-61103, you should upgrade to FRRouting version 10.4.2 or later.
What causes the CVE-2025-61103 vulnerability?
CVE-2025-61103 is caused by a NULL pointer dereference in the show_vty_ext_link_lan_adj_sid function at ospf_ext.c.
What software is affected by CVE-2025-61103?
CVE-2025-61103 affects FRRouting frr versions from 4.0 through 10.4.1.
What is the impact of exploiting CVE-2025-61103?
Exploiting CVE-2025-61103 can lead to a Denial of Service (DoS) condition by sending crafted OSPF packets.