Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | frr | 10.5.1-3 | — |
| Debian 13 | frr | 10.3-3+deb13u1 | — |
| Debian 12 | frr | 8.4.4-1.1~deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | frr | 10.5.1-1ubuntu2 | — |
| Ubuntu 25.10 | frr | 10.4.1-3ubuntu1.1 | USN-8046-1 |
| Ubuntu 24.04 LTS | frr | 8.4.4-1.1ubuntu6.5 | USN-8046-1 |
| Ubuntu 22.04 LTS | frr | 8.1-1ubuntu1.14 | USN-8046-1 |
| Ubuntu 20.04 LTS | quagga | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | frr | No fix yet | — |
| Ubuntu Pro 18.04 LTS | quagga | No fix yet | — |
| Ubuntu Pro 16.04 LTS | quagga | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | frr | 8.5.6-150500.4.36.1 | SUSE-SU-2026:1063-1, SUSE-SU-2026:0665-1 |
| SLES 12 SP5 | frr | 8.5.6-8.9.1 | SUSE-SU-2026:1057-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | frr | 8.5.6-150500.4.36.1 | SUSE-SU-2026:1063-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | frr | 9.1.1-5 | — |
| Azure Linux 2 (CBL-Mariner) | frr | 8.5.5-5 | — |
Advisories 5
- WID-SEC-2025-2428 FRRouting (ospf_opaque.c): Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jun 4, 2026
- USN-8046-1 frr vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- SUSE-SU-2026:1057-1 Security update for frr SUSE / openSUSE Security Updates · Mar 27, 2026
- SUSE-SU-2026:1063-1 Security update for frr SUSE / openSUSE Security Updates · Mar 27, 2026
- SUSE-SU-2026:0665-1 Security update for frr SUSE / openSUSE Security Updates · Mar 23, 2026