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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-68515

OpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel union

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, exrmultiview can write past a heap allocation when it combines two attacker-supplied, individually valid scanline EXR files whose union dataWindow is not aligned to one view's channel subsampling. The utility allocates sampled channel storage using a truncated union_width / xSampling, then reads the sampled input through a Slice based on the misaligned union window, producing a heap out-of-bounds write. The trigger is normal public-tool processing, such as exrmultiview left A.exr right B.exr out.exr with crafted but valid inputs, so this is not solely an API or caller-precondition issue. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

AcademySoftwareFoundation openexr

  • >= 3.3.0, < 3.3.13affected
  • >= 3.4.0, < 3.4.14affected
  • < 3.2.11affected

References