Description
In FRRouting (FRR) through 9.1, an infinite loop can occur when receiving a MP/GR capability as a dynamic capability because malformed data results in a pointer not advancing.
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 | 10.0.1-0.1 | — |
| Debian 13 | frr | 10.0.1-0.1 | — |
| Debian 12 | frr | No fix yet | — |
| Debian 11 | frr | 7.5.1-1.1+deb11u3 | DLA-3865-1 |
| Debian 10 | frr | 7.5.1-1.1+deb10u2 | DLA-3797-1 |
Advisories 3
- WID-SEC-2024-0806 FRRouting Project FRRouting: Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jun 4, 2026
- DLA-3865-1 frr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3797-1 frr - security update Debian Security (DSA / DLA) · Mar 9, 2026