PT-2025-44020 · Unknown+4 · Frrouting Frr+4

Published 2025-10-27 · Updated 2026-04-17 · CVE-2025-61100

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions FRRouting/frr versions 2.0 through 10.4.1

Description FRRouting/frr contains a flaw due to a NULL pointer dereference in the ospf opaque lsa dump function located in ospf opaque.c. This issue can be triggered by specific malformed Link State Advertisements (LSAs), potentially leading to a Denial of Service (DoS).

Recommendations Update FRRouting/frr to a version later than 10.4.1.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

AZL-69565

AZL-69574

BDU:2026-07218

CVE-2025-61100

OPENSUSE-SU-2026:10207-1

OPENSUSE-SU-2026:20682-1

SUSE-SU-2026:0665-1

SUSE-SU-2026:1057-1

SUSE-SU-2026:1063-1

SUSE-SU-2026:2121-1

SUSE-SU-2026:21550-1

USN-8046-1

Affected Products

Debian

Frrouting Frr

Linuxmint

Red Os

Ubuntu

References · 56

• 🔥 https://github.com/FRRouting/frr/issues/19471 · Exploit
• 🔥 https://github.com/s1awwhy/BugList/blob/main/CVE-2025-61100.md · Exploit
• https://github.com/FRRouting/frr/pull/19480/commits/cda5ddac0940562d1dca7cbef34d0ce5b00f160b · Patch
• https://ubuntu.com/security/CVE-2025-61101 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-61100 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-61102 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8046-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8046-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0665-1 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-69565 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-61104 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-61100 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-69574 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-61099 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-61103 · Vendor Advisory