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| author | Alan Stern <stern@rowland.harvard.edu> | 2019-04-22 11:16:04 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-25 11:11:41 +0200 |
| commit | c114944d7d67f24e71562fcfc18d550ab787e4d4 (patch) | |
| tree | 04f2d076bcc3f9a00ebf3395bfb90e21cc5eaf31 /net | |
| parent | ef61eb43ada6c1d6b94668f0f514e4c268093ff3 (diff) | |
| download | linux-c114944d7d67f24e71562fcfc18d550ab787e4d4.tar.bz2 | |
USB: w1 ds2490: Fix bug caused by improper use of altsetting array
The syzkaller USB fuzzer spotted a slab-out-of-bounds bug in the
ds2490 driver. This bug is caused by improper use of the altsetting
array in the usb_interface structure (the array's entries are not
always stored in numerical order), combined with a naive assumption
that all interfaces probed by the driver will have the expected number
of altsettings.
The bug can be fixed by replacing references to the possibly
non-existent intf->altsetting[alt] entry with the guaranteed-to-exist
intf->cur_altsetting entry.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: syzbot+d65f673b847a1a96cdba@syzkaller.appspotmail.com
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions