CVE-2025-61100
published 2025-10-27CVE-2025-61100: FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This…
PriorityP337high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.46%
36.8th percentile
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | frr | < frr 10.5.1-3 (forky) | frr 10.5.1-3 (forky) |
| frrouting | frrouting | 2.0 – 10.4.1 | — |
| msrc | azl3_frr_9.1.1-3_on_azure_linux_3.0 | — | — |
| msrc | azl3_frr_9.1.1-4_on_azure_linux_3.0 | — | — |
| msrc | azl3_frr_9.1.1-5_on_azure_linux_3.0 | — | — |
| msrc | cbl2_frr_8.5.5-3_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_frr_8.5.5-4_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_frr_8.5.5-5_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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Ubuntu
FRR vulnerabilities
vendor_ubuntu·2026-02-17
CVE-2025-61104 FRR vulnerabilities
Title: FRR vulnerabilities
Summary: Several security issues were fixed in FRR.
It was discovered that FRR incorrectly handled certain malformed OSPF and
update packets. A remote attacker could possibly use these issues to cause
FRR to crash, resulting in a denial of service.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
frr: FRRouting: NULL Pointer Dereference in FRRouting
vendor_redhat·2025-10-27·CVSS 7.5
CVE-2025-61100 [HIGH] CWE-476 frr: FRRouting: NULL Pointer Dereference in FRRouting
frr: FRRouting: NULL Pointer Dereference in FRRouting
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
A NULL pointer dereference vulnerability was found in FRRouting within the ospf_opaque_lsa_dump function within ospf_opaque.c. When the OSPF daemon (ospfd) has the debug command debug ospf packet all send/recv detail enabled, it attempts to dump detailed information for received or sent OSPF packets. Under specific malformed LSA conditions, the function may dereference a NULL pointer, leading to a crash of the OSPF process and resulting in a Denial of Service (DoS).
Statement:
Microsoft
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Deni
vendor_msrc·2025-10-14·CVSS 7.5
CVE-2025-61100 [HIGH] CWE-476 FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Deni
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If imp
Debian
CVE-2025-61100: frr - FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer...
vendor_debian·2025·CVSS 7.5
CVE-2025-61100 [HIGH] CVE-2025-61100: frr - FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer...
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 10.5.1-3)
sid: resolved (fixed in 10.5.1-3)
trixie: open
OSV
CVE-2025-61100: FRRouting/frr from v2
osv·2025-10-27·CVSS 7.5
CVE-2025-61100 [HIGH] CVE-2025-61100: FRRouting/frr from v2
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
GHSA
GHSA-v8m2-rxq9-9x2j: FRRouting/frr from v2
ghsa_unreviewed·2025-10-27
CVE-2025-61100 [HIGH] CWE-476 GHSA-v8m2-rxq9-9x2j: FRRouting/frr from v2
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-10-27
Published