# CVE-2022-40318: frr: FRRouting is free software that manages TCP/IP based routing protocols

CVE-2022-40318 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2022-40318, released May 3, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-40318
- Priority: Routine
- CVSS: 6.5 (Moderate)
- EPSS: 0.0198
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 3, 2023

## Description

FRRouting is free software that manages TCP/IP based routing protocols. It supports BGP4, OSPFv2, OSPFv3, ISIS, RIP, RIPng, PIM, NHRP, PBR, EIGRP and BFD.   Security Fix(es):  * frr: Reachable assertion in peek_for_as4_capability function (CVE-2022-36440)  * frr: denial of service by crafting a BGP OPEN message with an option of type 0xff (CVE-2022-40302)  * frr: denial of service by crafting a BGP OPEN message with an option of type in bgp_open_option_parse in the bgp_open.c 0xff (CVE-2022-40318)  * frr: out-of-bounds read exists in the BGP daemon of FRRouting (CVE-2022-43681)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.3 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | frr Debian 12.15 (bookworm) | 8.4.1-1 | [DEBIAN-CVE-2022-40318](https://patchblox.com/security/data/fix/linux/debian-cve-2022-40318.md) | May 3, 2023 |
| Linux | frr Debian 13.5 (trixie) | 8.4.1-1 | [DEBIAN-CVE-2022-40318](https://patchblox.com/security/data/fix/linux/debian-cve-2022-40318.md) | May 3, 2023 |
| Linux | frr Debian 14 | 8.4.1-1 | [DEBIAN-CVE-2022-40318](https://patchblox.com/security/data/fix/linux/debian-cve-2022-40318.md) | May 3, 2023 |
| Linux | frr RHEL 9 | 0:8.3.1-11.el9_3 | [RHSA-2023:6434](https://patchblox.com/security/data/fix/linux/rhsa-2023-6434.md) | Nov 7, 2023 |
| Linux | frr almalinux 9 | 8.3.1-11.el9_3.alma.1 | [ALSA-2023:6434](https://patchblox.com/security/data/fix/linux/alsa-2023-6434.md) | Nov 7, 2023 |
| Linux | frr ol 9 | 0:8.3.1-11.el9_3 | [ELSA-2023-6434](https://patchblox.com/security/data/fix/linux/elsa-2023-6434.md) | Nov 11, 2023 |
| Linux | frr-selinux RHEL 9 | 0:8.3.1-11.el9_3 | [RHSA-2023:6434](https://patchblox.com/security/data/fix/linux/rhsa-2023-6434.md) | Nov 7, 2023 |
| Linux | frr-selinux almalinux 9 | 8.3.1-11.el9_3.alma.1 | [ALSA-2023:6434](https://patchblox.com/security/data/fix/linux/alsa-2023-6434.md) | Nov 7, 2023 |
| Linux | frr-selinux ol 9 | 0:8.3.1-11.el9_3 | [ELSA-2023-6434](https://patchblox.com/security/data/fix/linux/elsa-2023-6434.md) | Nov 11, 2023 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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