CVE-2020-35965 Memory corruption in n/a

What is CVE-2020-35965?

CVE-2020-35965 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 4 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

decode_frame in libavcodec/exr.c in FFmpeg 4.3.1 has an out-of-bounds write because of errors in calculations of when to perform memset zero operations.

Weakness: CWE-787

Which versions are affected by CVE-2020-35965?

It affects 2 products.

Products include Debian Debian Linux, Ffmpeg Ffmpeg.

How do I fix CVE-2020-35965?

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-2020-35965 being exploited?

There is no known exploitation of CVE-2020-35965 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 CLEANSTART-2024-XU01734, DEBIAN-CVE-2020-35965, GHSA-cpq4-98gj-fhjv, JLSEC-2025-111, MGASA-2021-0273, UBUNTU-CVE-2020-35965.