An issue was discovered in libjpeg through 2020021. A NULL pointer dereference exists in the function BlockBitmapRequester::PullQData() located in blockbitmaprequester.cpp It allows an attacker to cause Denial of Service.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libjpeg | Jpeg | * | 2020021 (including) |
| Libjpeg | Ubuntu | trusty | * |
| Libjpeg | Ubuntu | upstream | * |
| Libjpeg | Ubuntu | xenial | * |
| Libjpeg-turbo | Ubuntu | trusty | * |
| Libjpeg6b | Ubuntu | hirsute | * |
| Libjpeg6b | Ubuntu | trusty | * |
| Libjpeg6b | Ubuntu | xenial | * |
| Libjpeg9 | Ubuntu | hirsute | * |
| Libjpeg9 | Ubuntu | xenial | * |