CVE-2025-61103

frr: NULL pointer dereference in show_vty_ext_link_lan_adj_sid() in ospf_ext.c

Published Oct 28, 2025 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_lan_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6322-1 frr security update
Ubuntu USN Ubuntu USN USN-8046-1 FRR vulnerabilities
History
Type Values Removed Values Added
CPEs cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Frrouting
Frrouting frrouting
Vendors & Products Frrouting
Frrouting frrouting
Type Values Removed Values Added
Title frr: NULL pointer dereference in show_vty_ext_link_lan_adj_sid() in ospf_ext.c
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Weaknesses CWE-476
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_lan_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 28, 2025, 5:11 PM
Reserved
Sep 26, 2025, 12:00 AM
Status
Analyzed
Published
Oct 28, 2025, 3:16 PM
Modified
Jun 17, 2026, 9:50 AM
Severity
Moderate
Public date
Oct 28, 2025, 12:00 AM