CVE-2026-26981
CVE-2026-26981 · OpenEXR has heap-buffer-overflow via signed integer underflow in ImfContextInit.cpp
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.6 and 3.4.0 through 3.4.4, a heap-buffer-overflow (OOB read) occurs in the `istream_nonparallel_read` function in `ImfContextInit.cpp` when parsing a malformed EXR file through a memory-mapped `IStream`. A signed integer subtraction produces a negative value that is implicitly converted to `size_t`, resulting in a massive length being passed to `memcpy`. Versions 3.3.7 and 3.4.5 contain a patch.
CVSS 6.5 · Media · EPSS 0,6% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: python
Productos y versiones afectados
openexr
- Versiones
- >= 3.3.0, < 3.3.7: Afectada
- >= 3.4.0, < 3.4.5: Afectada
Sin corrección publicada
openexr PyPI
- Versiones
- 3.3.0
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.3.6
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 3.3.0, < 3.3.7
Actualiza a 3.3.7
openexr PyPI
- Versiones
- 3.4.0
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 3.4.0, < 3.4.5
Actualiza a 3.4.5
openexr PyPI
- Versiones
- 3.3.0
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.3.6
- 3.4.0
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- Intervalos de versiones afectados
- ECOSYSTEM: ≥ 3.3.0, < 3.3.7 ∪ ≥ 3.4.0, < 3.4.5
Actualiza a 3.3.7; Actualiza a 3.4.5
Fuentes originales
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-q6vj-wxvf-5m8c
- https://github.com/AcademySoftwareFoundation/openexr/commit/6bb2ddf1068573d073edf81270a015b38cc05cef
- https://github.com/AcademySoftwareFoundation/openexr/commit/d2be382758adc3e9ab83a3de35138ec28d93ebd8
- https://nvd.nist.gov/vuln/detail/CVE-2026-26981