Description
A vulnerability classified as critical has been found in Open Asset Import Library Assimp up to 5.4.3. Affected is the function Assimp::BVHLoader::ReadNodeChannels in the library assimp/code/AssetLib/BVH/BVHLoader.cpp. The manipulation of the argument pNode leads to use after free. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Open Asset Import Library | Assimp | 5.4.0, 5.4.1, 5.4.2, 5.4.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | assimp | No fix yet | — |
| Debian 13 | assimp | No fix yet | — |
| Debian 12 | assimp | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | assimp | No fix yet | — |
| Ubuntu 26.04 LTS | assimp | No fix yet | — |
| Ubuntu 25.10 | assimp | No fix yet | — |
| Ubuntu 24.04 LTS | assimp | No fix yet | — |
| Ubuntu 22.04 LTS | assimp | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | assimp | No fix yet | — |
| Ubuntu 18.04 LTS | assimp | No fix yet | — |
| Ubuntu 16.04 LTS | assimp | No fix yet | — |
References
- VDB-312588 | Open Asset Import Library Assimp BVHLoader.cpp ReadNodeChannels use after free vdb-entry technical-description
- VDB-312588 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #591233 | Open Asset Import Library Assimp 5.4.3 Use After Free third-party-advisory
- https://github.com/assimp/assimp/issues/6219 issue-tracking
- https://github.com/assimp/assimp/issues/6219#issuecomment-2945016005 issue-tracking
- https://github.com/user-attachments/files/20604791/reproduce_2.tar.gz exploit