The qcow2_open function in the (block/qcow2.c) in QEMU before 1.7.2 and 2.x before 2.0.0 allows local users to cause a denial of service (NULL pointer dereference) via a crafted image which causes an error, related to the initialization of the snapshot_offset and nb_snapshots fields.
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 |
|---|---|---|---|
| Qemu | Qemu | * | 1.7.1 (including) |
| Qemu | Qemu | 2.0.0-rc0 (including) | 2.0.0-rc0 (including) |
| Qemu | Qemu | 2.0.0-rc1 (including) | 2.0.0-rc1 (including) |
| Qemu | Qemu | 2.0.0-rc2 (including) | 2.0.0-rc2 (including) |
| Qemu | Qemu | 2.0.0-rc3 (including) | 2.0.0-rc3 (including) |