CVE-2025-61102
published 2025-10-27CVE-2025-61102: FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This…
PriorityP336high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.47%
37.9th percentile
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
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 | 4.0 – 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
FRRouting: frr: NULL Pointer Dereference in FRRouting
vendor_redhat·2025-10-27·CVSS 7.5
CVE-2025-61102 [HIGH] CWE-476 FRRouting: frr: NULL Pointer Dereference in FRRouting
FRRouting: frr: NULL Pointer Dereference in FRRouting
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
A NULL pointer dereference vulnerability was found in FRRouting within the show_vty_ext_link_adj_sid function within ospf_ext.c. When the OSPF daemon (ospfd) is configured with the debug command debug ospf packet all send/recv detail, it attempts to display detailed information for OSPF packets. Under certain malformed OSPF packet conditions, this function may dereference a NULL pointer, leading to a crash of the OSPF process.
Statement: This issue is rated Moderate rather than Important b
Microsoft
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a De
vendor_msrc·2025-10-14·CVSS 7.5
CVE-2025-61102 [HIGH] CWE-476 FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a De
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
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 impact to addit
Debian
CVE-2025-61102: frr - FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer...
vendor_debian·2025·CVSS 7.5
CVE-2025-61102 [HIGH] CVE-2025-61102: frr - FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer...
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 10.5.1-3)
sid: resolved (fixed in 10.5.1-3)
trixie: open
GHSA
GHSA-63qm-crxg-f8px: FRRouting/frr from v4
ghsa_unreviewed·2025-10-27
CVE-2025-61102 [HIGH] CWE-476 GHSA-63qm-crxg-f8px: FRRouting/frr from v4
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
OSV
CVE-2025-61102: FRRouting/frr from v4
osv·2025-10-27·CVSS 7.5
CVE-2025-61102 [HIGH] CVE-2025-61102: FRRouting/frr from v4
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-10-27
Published