CVE-2022-37452 Memory corruption in n/a

What is CVE-2022-37452?

CVE-2022-37452 is a critical memory corruption vulnerability in Debian Debian Linux, published on 7 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.

Weakness: CWE-787

Which versions are affected by CVE-2022-37452?

It affects 2 products.

Products include Debian Debian Linux, Exim Exim.

How do I fix CVE-2022-37452?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-37452 being exploited?

There is no known exploitation of CVE-2022-37452 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-2022-37452, DLA-3082-1, GHSA-2xwx-3gmg-f9vj, UBUNTU-CVE-2022-37452, USN-5574-1.