CVE-2021-46790 Memory corruption in n/a

What is CVE-2021-46790?

CVE-2021-46790 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 2 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.

Weakness: CWE-787

Which versions are affected by CVE-2021-46790?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Tuxera Ntfs-3g.

How do I fix CVE-2021-46790?

Apply the vendor's patch.

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

Is CVE-2021-46790 being exploited?

There is no known exploitation of CVE-2021-46790 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 ALPINE-CVE-2021-46790, AZL-9597, DEBIAN-CVE-2021-46790, GHSA-274j-jr8v-77f7, UBUNTU-CVE-2021-46790, USN-5452-1.