The TrustZone driver in Huawei P9 phones with software Versions earlier than EVA-AL10C00B352 and P9 Lite with software VNS-L21C185B130 and earlier versions and P8 Lite with software ALE-L02C636B150 and earlier versions has an improper resource release vulnerability, which allows attackers to cause a system restart or privilege elevation.
The product does not maintain or incorrectly maintains control over a resource throughout its lifetime of creation, use, and release.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| P9_firmware | Huawei | - (including) | - (including) |
Resources often have explicit instructions on how to be created, used and destroyed. When code does not follow these instructions, it can lead to unexpected behaviors and potentially exploitable states. Even without explicit instructions, various principles are expected to be adhered to, such as “Do not use an object until after its creation is complete,” or “do not use an object after it has been slated for destruction.”