A remote overflow exists in PSP (PlayStation Portable). The TIFF library of the Photo Viewer application fails to perform proper bounds checking resulting in a buffer overflow. With a specially crafted TIFF file, a remote attacker can cause the device to crash resulting in a loss of availability.
Upgrade to firmware version 2.01 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.