CVE-2024-56827: Openjpeg: heap buffer overflow in lib/openjp2/j2k.c

Severity: medium (CVSS 5.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-01-09 · updated 2026-06-17
Weakness: CWE-122

Description

A flaw was found in the OpenJPEG project. A heap buffer overflow condition may be triggered when certain options are specified while using the opj_decompress utility. This can lead to an application crash or other undefined behavior.

Affected products

Red Hat Enterprise Linux 9: all versions — fixed in 0:2.4.0-8.el9

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 9 0:2.4.0-8.el9. Check the vendor advisory for mitigations.

References

https://access.redhat.com/errata/RHSA-2025:7309
https://access.redhat.com/security/cve/CVE-2024-56827
https://bugzilla.redhat.com/show_bug.cgi?id=2335174
https://github.com/uclouvain/openjpeg/commit/e492644fbded4c820ca55b5e50e598d346e850e8
https://github.com/uclouvain/openjpeg/issues/1564
https://lists.debian.org/debian-lts-announce/2025/04/msg00002.html

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