CVE-2022-40302 Denial of service in n/a

What is CVE-2022-40302?

CVE-2022-40302 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 3 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case.

Weakness: CWE-125

Which versions are affected by CVE-2022-40302?

It affects 2 products.

Products include Debian Debian Linux, Frrouting Frrouting.

How do I fix CVE-2022-40302?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-40302 being exploited?

There is no known exploitation of CVE-2022-40302 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-40302, GHSA-j7hm-p94x-q9pw.