CVE-2025-61101 — NULL Pointer Dereference in Frrouting

CWE-476 — NULL Pointer Dereference7 documents7 sources
Severity
7.5HIGHNVD
EPSS
0.2%
top 52.58%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
Debian FRRFrroutingMsrc Azl3 FRR 9.1.1-3 ON Azure Linux 3.0+5 more
Timeline
PublishedOct 27
Latest updateFeb 17

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages8 packages

▶NVDfrrouting/frrouting4.0 — 10.4.1
▶debiandebian/frr< frr 10.5.1-3 (forky)

Patches

Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-23gf-35qh-v8hp: FRRouting/frr from v4↗2025-10-27
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OSV
CVE-2025-61101: FRRouting/frr from v4↗2025-10-27
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📋Vendor Advisories

4
Ubuntu
FRR vulnerabilities↗2026-02-17
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Red Hat
FRRouting: frr: NULL Pointer Dereference in FRRouting↗2025-10-27
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Microsoft
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_rmt_itf_addr function at ospf_ext.c. This vulnerability allows attackers to cause↗2025-10-14
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Debian
CVE-2025-61101: frr - FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer...↗2025
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