I've been thinking about a couple ways it might be possible to run exploit code on the PSP. Tell me what you think; any hardcore devs out there, tell me if you think it's possible.
First: Some MP3 files contain an image that the PSP loads when you display the file. I'm not sure what format it is.
Second: Many MP3 files contain ID3/ID3v2 tags. I know that ID3v2 tags have variable tag lengths; this could lead to a possible buffer overflow.
Could either of these be used as a potential entry point for exploit code?? I'm not too familiar with the vulnerabilities in these two situations, so I can't do anything with it right now.