Bug 2552420

Summary:	openjpeg: openjpeg: heap buffer overflow in opj_dwt_encode_and_deinterleave_v() [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Laura Pardo <lpardo>
Component:	openjpeg	Assignee:	Stewart Smith <trawets>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	rawhide	CC:	manisandro, trawets
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["68944e86-408d-4dc9-b0c9-ff3519b0ef4b"]}
Fixed In Version:	openjpeg-2.5.4-5.fc45 openjpeg-2.5.4-5.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-10-31 18:52:47 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2552170

Description Laura Pardo 2026-10-14 15:43:08 UTC

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

Comment 1 Fedora Update System 2026-10-28 22:29:20 UTC

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

Comment 2 Fedora Update System 2026-10-28 22:29:24 UTC

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

Comment 3 Fedora Update System 2026-10-29 02:02:13 UTC

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.

Comment 4 Fedora Update System 2026-10-29 02:48:23 UTC

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.

Comment 5 Fedora Update System 2026-10-31 18:52:47 UTC

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.

Comment 6 Fedora Update System 2026-11-03 01:38:40 UTC

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.