On Thu, Apr 30, 2020 at 11:03:54PM -0400, Kyungtae Kim wrote: > We report a bug (in linux-5.6.8) found by FuzzUSB (a modified version > of syzkaller). > > This happened when the size of "name" buffer is smaller than that of > "page" buffer > (after function kstrdup executed at line 263). > I guess it comes from the "page" buffer containing 0 value in the middle. > So accessing the "name" buffer with "len" variable, which is used to > indicate the size of "page" buffer, > triggered memory access violation. > To fix, it may need to check the size of name buffer, and try to use > right index variable. Can you submit a patch for this as you have a reproducer to test the issue? thanks, greg k-h
