Integer overflow in OpenEXR - CVE-2026-40244

Vulnerability identifier: #VU126523

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-40244

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to corrupt heap memory.

The vulnerability exists due to integer overflow in DWA setupChannelData planarUncRle pointer arithmetic when parsing a crafted EXR file. A remote attacker can supply a crafted DWAA/DWAB EXR file with large dimensions to corrupt heap memory.

User interaction is required to open the crafted file, and the issue is triggered on non-DCT channels, including UINT or single-channel layouts.

OpenEXR
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Desktop Applications Module
Anolis OS
openEuler
libIlmImfUtil-2_2-23
openexr-debuginfo
libIlmImf-2_2-23
libIlmImfUtil-2_2-23-debuginfo
libIlmImf-2_2-23-debuginfo
openexr-debugsource
openexr-devel
OpenEXR-debuginfo
OpenEXR-libs
OpenEXR-devel
OpenEXR-debugsource
OpenEXR
OpenEXR-doc

Install security update from vendor's website.

OpenEXR - addressed in versions 3.2.8, 3.3.10, 3.4.10
libIlmImfUtil-2_2-23 - update to 2.2.1-150000.3.46.1
openexr-debuginfo - update to 2.2.1-150000.3.46.1
libIlmImf-2_2-23 - update to 2.2.1-150000.3.46.1
libIlmImfUtil-2_2-23-debuginfo - update to 2.2.1-150000.3.46.1
libIlmImf-2_2-23-debuginfo - update to 2.2.1-150000.3.46.1
openexr-debugsource - update to 2.2.1-150000.3.46.1
openexr-devel - update to 2.2.1-150000.3.46.1
OpenEXR-debuginfo - update to 3.1.11-8
OpenEXR-libs - update to 3.1.11-8
OpenEXR-devel - update to 3.1.11-8
OpenEXR-debugsource - update to 3.1.11-8
OpenEXR - update to 3.1.11-8
OpenEXR - update to 3.4.10-1
OpenEXR-devel - update to 3.4.10-1
OpenEXR-libs - update to 3.4.10-1
OpenEXR-doc - update to 3.4.10-1

• https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhx
• https://github.com/advisories/GHSA-j526-66f6-fxhx

• Multiple vulnerabilities in OpenEXR
• openEuler 24.03 LTS update for OpenEXR
• openEuler 24.03 LTS SP3 update for OpenEXR
• openEuler 24.03 LTS SP1 update for OpenEXR
• SUSE update for openexr
• Anolis OS update for OpenEXR