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| author | Alan Stern <stern@rowland.harvard.edu> | 2021-06-07 11:23:07 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-09 11:11:39 +0200 |
| commit | 60dfe484cef45293e631b3a6e8995f1689818172 (patch) | |
| tree | 403ba4cb844a2869e6851592dfe82f0caa2a82f9 /drivers/hid/hid-a4tech.c | |
| parent | 307462a6f5c5a563ec084bb315f4e0279dfb2026 (diff) | |
| download | linux-60dfe484cef45293e631b3a6e8995f1689818172.tar.bz2 | |
USB: core: Avoid WARNings for 0-length descriptor requests
The USB core has utility routines to retrieve various types of
descriptors. These routines will now provoke a WARN if they are asked
to retrieve 0 bytes (USB "receive" requests must not have zero
length), so avert this by checking the size argument at the start.
CC: Johan Hovold <johan@kernel.org>
Reported-and-tested-by: syzbot+7dbcd9ff34dc4ed45240@syzkaller.appspotmail.com
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20210607152307.GD1768031@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hid/hid-a4tech.c')
0 files changed, 0 insertions, 0 deletions