Description
Missing input validation in the rfapiRibBi2Ri() function (rfapi_rib.c) of FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
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 | 10.6.1-1 | — |
| Debian 13 | frr | No fix yet | — |
| Debian 12 | frr | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | frr | 10.4.1-3ubuntu1.2 | — |
| Ubuntu 24.04 LTS | frr | 8.4.4-1.1ubuntu6.6 | — |
| Ubuntu 22.04 LTS | frr | 8.1-1ubuntu1.15 | — |
| 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 | 7.2.1-1ubuntu0.2+esm4 | — |
| Ubuntu Pro 18.04 LTS | quagga | No fix yet | — |
| Ubuntu Pro 16.04 LTS | quagga | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | frr +1 | 10.4.4-1.el10_2 | RHSA-2026:24347 |
| RHEL 9 | frr +1 | 8.5.3-15.el9_8.1 | RHSA-2026:49527 |
| RHEL 9 | frr10 +1 | 10.4.3-3.el9_8.2 | RHSA-2026:49607 |
| RHEL 8 | frr +1 | 7.5.1-25.el8_10 | RHSA-2026:49511 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | frr +1 | 10.4.4-1.el10_2 | ALSA-2026:24347 |
| AlmaLinux 9 | frr +1 | 8.5.3-15.el9_8.1 | ALSA-2026:49527 |
| AlmaLinux 9 | frr10 +1 | 10.4.3-3.el9_8.2 | ALSA-2026:49607 |
| AlmaLinux 8 | frr +1 | 7.5.1-25.el8_10 | ALSA-2026:49511 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | frr | 8.5.3-15.el9_8.1 | RLSA-2026:49527 |
| Rocky Linux 9 | frr10 | 10.4.3-3.el9_8.2 | RLSA-2026:49607 |
| Rocky Linux 8 | frr | 7.5.1-25.el8_10 | RLSA-2026:49511 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | frr +1 | 8.5.3-15.el9_8.1 | ELSA-2026-49527 |
| Oracle Linux 9 | frr10 +1 | 10.4.3-3.el9_8.2 | ELSA-2026-49607 |
| Oracle Linux 8 | frr +1 | 7.5.1-25.0.1.el8_10 | ELSA-2026-49511 |
Advisories 15
- ALSA-2026:24347 Important: frr security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2026:49527 Important: frr security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:49607 Important: frr10 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:49511 Important: frr security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-1795 FRRouting: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 4, 2026
- RLSA-2026:49511 Important: frr security update Rocky Linux Security Advisories · Aug 4, 2026
- RLSA-2026:49527 Important: frr security, bug fix, and enhancement update Rocky Linux Security Advisories · Aug 4, 2026
- RLSA-2026:49607 Important: frr10 security, bug fix, and enhancement update Rocky Linux Security Advisories · Aug 4, 2026
- RHSA-2026:49511 Red Hat Security Advisory: frr security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:49607 Red Hat Security Advisory: frr10 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:49527 Red Hat Security Advisory: frr security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:24347 Red Hat Security Advisory: frr security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- ELSA-2026-49607 Important: frr10 security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 3, 2026
- ELSA-2026-49527 Important: frr security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 3, 2026
- ELSA-2026-49511 Important: frr security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 3, 2026