CVE-2025-61107
published 2025-10-28CVE-2025-61107: FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at ospf_ext.c. This…
PriorityP337high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.58%
43.9th percentile
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LSA Update 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
frr: NULL pointer dereference in show_vty_ext_pref_pref_sid() in ospf_ext.c
vendor_redhat·2025-10-28·CVSS 7.5
CVE-2025-61107 [HIGH] CWE-476 frr: NULL pointer dereference in show_vty_ext_pref_pref_sid() in ospf_ext.c
frr: NULL pointer dereference in show_vty_ext_pref_pref_sid() in ospf_ext.c
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LSA Update packet.
A flaw was found in frr. When the OSPF daemon (ospfd) is configured with the debug command "debug ospf packet all send/recv detail", it attempts to print detailed information about OSPF packets. However, a specially crafted OSPF packet can trigger a NULL pointer dereference in the show_vty_ext_pref_pref_sid function in the ospf_ext.c file, causing the OSPF process to crash and resulting in a denial of service.
Statement: A very specific and non-default runtime
Microsoft
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a D
vendor_msrc·2025-10-14·CVSS 7.5
CVE-2025-61107 [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_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a D
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LSA Update 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 t
Debian
CVE-2025-61107: frr - FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer...
vendor_debian·2025·CVSS 7.5
CVE-2025-61107 [HIGH] CVE-2025-61107: 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_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LSA Update 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-35mh-v24c-mjw6: FRRouting/frr from v4
ghsa_unreviewed·2025-10-28
CVE-2025-61107 [HIGH] CWE-476 GHSA-35mh-v24c-mjw6: 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_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LSA Update packet.
OSV
CVE-2025-61107: FRRouting/frr from v4
osv·2025-10-28·CVSS 7.5
CVE-2025-61107 [HIGH] CVE-2025-61107: 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_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LSA Update packet.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-10-28
Published