CVE-2023-31490 Denial of service in n/a

What is CVE-2023-31490?

CVE-2023-31490 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 9 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue found in Frrouting bgpd v.8.4.2 allows a remote attacker to cause a denial of service via the bgp_attr_psid_sub() function.

Which versions are affected by CVE-2023-31490?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Frrouting Frrouting.

How do I fix CVE-2023-31490?

Apply the vendor's patch.

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-2023-31490 being exploited?

There is no known exploitation of CVE-2023-31490 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 AZL-26729, DEBIAN-CVE-2023-31490, GHSA-jc82-c2xg-g578, UBUNTU-CVE-2023-31490, USN-6136-1.