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authorKulikov Vasiliy <segooon@gmail.com>2010-07-28 20:41:17 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-04-14 16:53:39 -0700
commita98fa05b08e4226bcc1af32ee8c9ec8f1941333d (patch)
treed11cffc8e6541b285f2f6cc7cbc7e564742bce53 /sound
parent0042e3362775373d95cc198100cc4e31ce09e9cc (diff)
downloadlinux-linaro-stable-a98fa05b08e4226bcc1af32ee8c9ec8f1941333d.tar.gz
sound: oss: midi_synth: check get_user() return value
commit b3390ceab95601afc12213c3ec5551d3bc7b638f upstream. get_user() may fail, if so return -EFAULT. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/oss/midi_synth.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/oss/midi_synth.c b/sound/oss/midi_synth.c
index f83f0725391f..978423ea07cd 100644
--- a/sound/oss/midi_synth.c
+++ b/sound/oss/midi_synth.c
@@ -519,7 +519,9 @@ midi_synth_load_patch(int dev, int format, const char __user *addr,
{
unsigned char data;
- get_user(*(unsigned char *) &data, (unsigned char __user *) &((addr)[hdr_size + i]));
+ if (get_user(data,
+ (unsigned char __user *)(addr + hdr_size + i)))
+ return -EFAULT;
eox_seen = (i > 0 && data & 0x80); /* End of sysex */