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(parent: 9ad6645) | patch
HID: hid-lg4ff: Add check for empty lbuf
authorAnastasia Belova <abelova@astralinux.ru>
Fri, 11 Nov 2022 12:55:11 +0000 (15:55 +0300)
committerJiri Kosina <jkosina@suse.cz>
Mon, 14 Nov 2022 22:56:52 +0000 (23:56 +0100)
commitd180b6496143cd360c5d5f58ae4b9a8229c1f344
treec892b4806ab23ca0f5ff58d1a0c90450056101b6tree
parent9ad6645a9dce4d0e42daca6ebf32a154401c59d3commit | diff
HID: hid-lg4ff: Add check for empty lbuf

If an empty buf is received, lbuf is also empty. So lbuf is
accessed by index -1.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: f31a2de3fe36 ("HID: hid-lg4ff: Allow switching of Logitech gaming wheels between compatibility modes")
Signed-off-by: Anastasia Belova <abelova@astralinux.ru>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
drivers/hid/hid-lg4ff.c diff | blob | history
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