Re: [PATCH] jfs: Fix array-index-out-of-bounds in diFree

[Jeongjun Park <aha310510@xxxxxxxxx>]

Through direct testing and debugging, I've determined that this 
vulnerability occurs when mounting an incorrect image, leading to 
the potential passing of an excessively large value to 
'sbi->bmap->db_agl2size'. Importantly, there have been no instances 
of memory corruption observed within 'sbi->bmap->db_agl2size'. 

Therefore, I think implementing a patch that terminates the 
function in cases where an invalid value is detected.

Thanks.