CVE-2020-15389 Use after free in n/a

What is CVE-2020-15389?

CVE-2020-15389 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 29 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

jp2/opj_decompress.c in OpenJPEG through 2.3.1 has a use-after-free that can be triggered if there is a mix of valid and invalid files in a directory operated on by the decompressor. Triggering a double-free may also be possible. This is related to calling opj_image_destroy twice.

Weakness: CWE-416

Which versions are affected by CVE-2020-15389?

It affects 3 products.

Products include Debian Debian Linux, Oracle Outside in Technology, Uclouvain Openjpeg.

How do I fix CVE-2020-15389?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2020-15389 being exploited?

There is no known exploitation of CVE-2020-15389 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-2020-15389, AZL-44193, DEBIAN-CVE-2020-15389, GHSA-7fhh-p939-wc2j, JLSEC-2026-534, MGASA-2020-0307 and 1 more.