This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-34545 →
Categories
UBUNTU-CVE-2026-34545

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From...

Original description

The description as published by the source.

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.7, an attacker providing a crafted .exr file with HTJ2K compression and a channel width of 32768 can write controlled data beyond the output heap buffer in any application that decodes EXR images. The write primitive is 2 bytes per overflow iteration or 4 bytes (by another path), repeating for each additional pixel past the overflow point. In this context, a heap write overflow can lead to remote code execution on systems. This issue has been patched in version 3.4.7.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:26.10 openexr
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

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