Bug 2523172 (CVE-2026-53532) - CVE-2026-53532 OpenEXR: OpenEXR: Denial of Service via crafted HTJ2K-compressed EXR file
Summary: CVE-2026-53532 OpenEXR: OpenEXR: Denial of Service via crafted HTJ2K-compress...
Keywords:
Status: NEW
Alias: CVE-2026-53532
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-24 22:31 UTC by OSIDB Bzimport
Modified: 2026-08-25 16:05 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-24 22:31:24 UTC
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 crafted HTJ2K-compressed EXR file causes 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.


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