CVE-2025-64183— OpenEXR has use after free in PyObject_StealAttrString
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I. Basic Information for CVE-2025-64183
Vulnerability Information
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Vulnerability Title
OpenEXR has use after free in PyObject_StealAttrString
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.2.0 through 3.2.4, 3.3.0 through 3.3.5, and 3.4.0 through 3.4.2, there is a use-after-free in PyObject_StealAttrString of pyOpenEXR_old.cpp. The legacy adapter defines PyObject_StealAttrString that calls PyObject_GetAttrString to obtain a new reference, immediately decrefs it, and returns the pointer. Callers then pass this dangling pointer to APIs like PyLong_AsLong/PyFloat_AsDouble, resulting in a use-after-free. This is invoked in multiple places (e.g., reading PixelType.v, Box2i, V2f, etc.) Versions 3.2.5, 3.3.6, and 3.4.3 fix the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenEXR 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenEXR是Academy Software Foundation开源的一种高动态范围图像（HDR）文件格式的开放标准。 OpenEXR 3.2.0版本至3.2.4版本、3.3.0版本至3.3.5版本和3.4.0版本至3.4.2版本存在资源管理错误漏洞，该漏洞源于pyOpenEXR_old.cpp中PyObject_StealAttrString存在释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| AcademySoftwareFoundation | openexr | >= 3.2.0, < 3.2.5 | - |
II. Public POCs for CVE-2025-64183
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|---|
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Same Patch Batch · AcademySoftwareFoundation · 2025-11-10 · 3 CVEs total
| CVE-2025-64182 | OpenEXR has buffer overflow in PyOpenEXR_old's channels() and channel() | |
| CVE-2025-64181 | OpenEXR Makes Use of Uninitialized Memory |
IV. Related Vulnerabilities
Same product: openexr
- CVE-2026-42217
OpenEXR: Shift exponent overflow in `readVariableLengthInteg - CVE-2026-42216
OpenEXR: Out-of-bounds read in `IDManifest::init()` during p - CVE-2026-41142
OpenEXR is Vulnerable to Integer overflow in ImageChannel::r - CVE-2026-40250
OpenEXR has integer overflow in DWA decoder outBufferEnd poi - CVE-2026-40244
OpenEXR has integer overflow in DWA setupChannelData planarU
Same vendor: AcademySoftwareFoundation
- CVE-2026-42217
OpenEXR: Shift exponent overflow in `readVariableLengthInteg - CVE-2026-42216
OpenEXR: Out-of-bounds read in `IDManifest::init()` during p - CVE-2026-41142
OpenEXR is Vulnerable to Integer overflow in ImageChannel::r - CVE-2026-7582
AcademySoftwareFoundation OpenImageIO DDS Image ddsinput.cpp - CVE-2026-40250
OpenEXR has integer overflow in DWA decoder outBufferEnd poi
V. Comments for CVE-2025-64183
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