Fedora Account System
Red Hat Associate
Red Hat Customer
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. A heap buffer overflow was found in OpenJPEG's DWT encoder in the opj_dwt_encode_and_deinterleave_v() function in src/lib/openjp2/dwt.c. When a resolution level has zero height with an odd starting coordinate, the function accesses 32 bytes beyond the end of its heap-allocated scratch buffer, causing both out-of-bounds reads and writes. This can lead to heap corruption and process abort. The vulnerability was introduced in commit a38e970f (2020-05-22) which added vectorized vertical pass support. It affects OpenJPEG versions 2.4.0 through 2.5.4 and the current upstream master. Versions 2.3.1 and earlier are not affected. The reporter confirms heap out-of-bounds read, heap out-of-bounds write / heap corruption, and process abort / denial of service. The reporter makes no claim about exploitability. This is an encoder-side issue, not decoder-side. Upstream issue: https://github.com/uclouvain/openjpeg/issues/1673 Upstream proposed fix: https://github.com/uclouvain/openjpeg/pull/1674 oss-security disclosure: https://www.openwall.com/lists/oss-security/2026/10/05/5
FEDORA-2026-a4c3cdcb67 (openjpeg-2.5.4-5.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-a4c3cdcb67
FEDORA-2026-e0d454da76 (openjpeg-2.5.4-5.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-e0d454da76
FEDORA-2026-e0d454da76 has been pushed to the Fedora 45 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-e0d454da76` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e0d454da76 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-a4c3cdcb67 has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-a4c3cdcb67` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a4c3cdcb67 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-e0d454da76 (openjpeg-2.5.4-5.fc45) has been pushed to the Fedora 45 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-a4c3cdcb67 (openjpeg-2.5.4-5.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.