Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AcademySoftwareFoundation | openexr | >= 3.0.0, < 3.2.9, >= 3.3.0, < 3.3.11, >= 3.4.0, < 3.4.11 | — |
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 | — |
| Ubuntu 25.10 | openexr | No fix yet | — |
Show 5 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 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 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openexr | 3.4.11-1.1 | openSUSE-SU-2026:10772-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | openexr | 3.4.11-r0 | — |
| Alpine v3.23 | openexr | 3.4.13-r0 | — |
| Alpine v3.22 | openexr | 3.3.11-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | openexr +2 | 3.1.5-1.amzn2023.0.11 | ALAS2023-2026-1713 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | openexr +7 | 3.4.10-r0 | — |
| Wolfi rolling | openexr-libilmthread | 3.4.11-r0 | — |
Advisories 2
- ALAS2023-2026-1713 Important: openexr security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 26, 2026
- openSUSE-SU-2026:10772-1 libIex-3_4-33-3.4.11-1.1 on GA media SUSE / openSUSE Security Updates · May 14, 2026