CVE-2021-45480 Denial of service in n/a

What is CVE-2021-45480?

CVE-2021-45480 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 24 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the Linux kernel before 5.15.11. There is a memory leak in the __rds_conn_create() function in net/rds/connection.c in a certain combination of circumstances.

Weakness: CWE-401

Which versions are affected by CVE-2021-45480?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2021-45480?

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-2021-45480 being exploited?

There is no known exploitation of CVE-2021-45480 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-41801, AZL-7097, DEBIAN-CVE-2021-45480, GHSA-p5rp-g3gq-57jq, UBUNTU-CVE-2021-45480.