When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.This bug only affects Firefox on MacOS. Other operating systems are unaffected.. This vulnerability affects Firefox < 95.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 95.0 (excluding) |
| Firefox | Ubuntu | trusty | * |
| Firefox | Ubuntu | xenial | * |