CVE-2021-45972 Memory corruption in n/a

What is CVE-2021-45972?

CVE-2021-45972 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 1 Jan 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

The giftrans function in giftrans 1.12.2 contains a stack-based buffer overflow because a value inside the input file determines the amount of data to write. This allows an attacker to overwrite up to 250 bytes outside of the allocated buffer with arbitrary data.

Weakness: CWE-1284

Which versions are affected by CVE-2021-45972?

It affects 2 products.

Products include Debian Debian Linux, Giftrans Project Giftrans.

How do I fix CVE-2021-45972?

No fix has been published for CVE-2021-45972 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2021-45972 being exploited?

There is no known exploitation of CVE-2021-45972 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-2021-45972, GHSA-mvg4-4v3q-g4xj, UBUNTU-CVE-2021-45972.