Description
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.12, a reachable assertion failure in the HTJ2K decode path allows a crafted HTJ2K-compressed EXR file to cause an unconditional process abort in any application that calls exr_start_read() on untrusted input, resulting in denial of service. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library while constructing the codestream and evaluating its quantization delta parameters. OpenJPH uses an assertion rather than a recoverable error to validate those bits, so any invalid value calls abort() directly and cannot be intercepted by surrounding error handling, a problem compounded by OpenEXR wrapping only its internal HT header parser in error handling while leaving the later codestream read and construction calls unprotected. This issue has been resolved in version 3.4.13.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AcademySoftwareFoundation | openexr | < 3.2.10, >= 3.3.0, <= 3.3.12, >= 3.4.0, <= 3.4.13 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openexr | 3.4.14-0.1 | — |
| Debian 13 | openexr | 3.2.12-1~deb13u1 | — |
| Debian 12 | openexr | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | openexr | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | openexr | No fix yet | — |
| Ubuntu Pro 24.04 LTS | openexr | No fix yet | — |
| Ubuntu Pro 22.04 LTS | openexr | No fix yet | — |
| Ubuntu Pro 20.04 LTS | openexr | No fix yet | — |
| Ubuntu Pro 18.04 LTS | openexr | No fix yet | — |
| Ubuntu Pro 16.04 LTS | openexr | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | openexr | 2.2.1-150000.3.52.1 | SUSE-SU-2026:3169-1 |
| SLES 12 SP5 | openexr | 2.1.0-6.48.1 | SUSE-SU-2026:3168-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | openexr | 3.2.2-160000.9.1 | SUSE-SU-2026:22653-1 |
| SLES 16.0 | openexr | 3.2.2-160000.9.1 | SUSE-SU-2026:22653-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openexr | 3.4.13-1.1 | openSUSE-SU-2026:11218-1 |
| openSUSE Leap 16.0 | openexr | 3.2.2-160000.9.1 | openSUSE-SU-2026:21336-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | OpenEXR | No fix yet | — |
Advisories 5
- SUSE-SU-2026:3168-1 Security update for openexr SUSE / openSUSE Security Updates · Jul 22, 2026
- SUSE-SU-2026:3169-1 Security update for openexr SUSE / openSUSE Security Updates · Jul 22, 2026
- SUSE-SU-2026:22653-1 Security update for openexr SUSE / openSUSE Security Updates · Jul 17, 2026
- openSUSE-SU-2026:21336-1 Security update for openexr SUSE / openSUSE Security Updates · Jul 15, 2026
- openSUSE-SU-2026:11218-1 libIex-3_4-33-3.4.13-1.1 on GA media SUSE / openSUSE Security Updates · Jul 9, 2026