Messages in this thread | | | Date | Fri, 1 May 2020 09:05:38 +0200 | From | Greg KH <> | Subject | Re: KASAN: slab-out-of-bounds Read in gadget_dev_desc_UDC_store |
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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
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