CVE-2025-54874

An out-of-bounds heap memory write (OOB) flaw was found in OpenJPEG. A call to opj_jp2_read_header may lead to an OOB heap memory write when the data stream p_stream is too short and p_image is not initialized.

This vulnerability is Important rather than Moderate because it allows a malformed or truncated data stream to trigger a heap-based out-of-bounds (OOB) write, which directly corrupts memory. Unlike read-based issues or null dereference crashes that typically lead to denial of service, an OOB write has the potential to alter program control flow, leading to arbitrary code execution under certain conditions. The affected pointer p_image is dereferenced without verifying the success of the header parsing routine, and if it's left uninitialized due to a parsing failure, writing to it results in undefined behavior.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.