Add validations check in AC3DImporter::ConvertObjectSection to ensure that writing TriangleStrip vertex data does not exceed mesh->mNumVertices allocation.
Fixes#6015 (CVE-2025-2754)
Fixes#6018 (CVE-2025-2756)
Signed-off-by: mapengyuan <mapengyuan@xfusion.com>
* Update copyright year and project version
- Fixes version in lib
* Update copyright year to 2026
* Update copyright year to 2026 in Version.cpp
* Update copyright year and version patch test
* Fix copyright year
* Adapt copyrights
* Refix export fbx PolygonVertexIndex
* Fix the function ColladaParser::ReadEffectColor when the flag ASSIMP_DOUBLE_PRESICION is enabled
* Fix the static function ReadLight in ColladaParser when the flag ASSIMP_DOUBLE_PRESICION is enabled
* Refactor of the call of the function fast_atoreal_move to the member of aiColor3D
* Fix the call of the function fast_atoreal_move when the flag ASSIMP_DOUBLE_PRESICION is enabled and and refactor
* Fix the call of the function fast_atoreal_move when the flag ASSIMP_DOUBLE_PRESICION is enabled
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Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>
* AC: Support Double-Sided Faces
The AC format marks double-sided SURF elements with the 0x20 flag, which Assimp ignored. This commit adds support for double-sided faces.
On encountering a double-sided face via the flag mentioned above, the front face is generated as usual but is then duplicated. The winding order of the duplicate is flipped to form a back face. Vertices are duplicated too so that back faces work correctly with normal vector generation and face smoothing.
* Add test file
* Simplify test case
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Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>
The search for a matching importer had a few issues, see #3791. There were two different mechanisms to determine whether an importer accepts a specific file extension:
1. `aiImporterDesc::mFileExtensions`, which was forwarded to the UI via `BaseImporter::GetExtensionList()`.
2. `BaseImporter::CanRead()` when called with `checkSig == false`, which determines whether to actually use that importer.
Both were redundant and got out of sync repeatedly. I removed 2. completely and replaced it with 1., thereby syncing UI/import and shortening all `BaseImporter::CanRead()` implementations.
Further bugfixes:
- fixed glTF2 importer throwing exceptions when checking whether it can load a file
- removed `BaseImporter::SimpleExtensionCheck()` because it is no longer used and had a bug with case sensitivity
Since the `checkSig` parameter in `BaseImporter::CanRead()` is now useless, it can be removed completely. I’m not sure if this would break ABI compatiblity, so I’ll submit it with a later pull request.
