CVE-2022-43681: Debian Linux

Medium severity, CVSS 6.5. EPSS: 2.1% chance of exploitation in the next 30 days.

An out-of-bounds read exists in the BGP daemon of FRRouting FRR through 8.4. When sending a malformed BGP OPEN message that ends with the option length octet (or the option length word, in case of an extended OPEN message), the FRR code reads of out of the bounds of the packet, throwing a SIGABRT signal and exiting. This results in a bgpd daemon restart, causing a Denial-of-Service condition.

Affected products

• Debian Debian Linux: version 10.0 only; version 11.0 only; version 12.0 only
• Frrouting Frrouting: up to and including 8.4

Published 2023-05-03. Last modified 2026-06-17.