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authorDavid Henningsson <david.henningsson@canonical.com>2016-02-05 09:05:41 +0100
committerTakashi Iwai <tiwai@suse.de>2016-02-05 12:35:11 +0100
commit360a8245680053619205a3ae10e6bfe624a5da1d (patch)
treeb70ee8fa2da27a573b1f1218ea93acfcf1fbd39c /sound/pci
parentALSA: timer: Fix leftover link at closing (diff)
downloadlinux-360a8245680053619205a3ae10e6bfe624a5da1d.tar.xz
linux-360a8245680053619205a3ae10e6bfe624a5da1d.zip
ALSA: hda - Fix static checker warning in patch_hdmi.c
The static checker warning is: sound/pci/hda/patch_hdmi.c:460 hdmi_eld_ctl_get() error: __memcpy() 'eld->eld_buffer' too small (256 vs 512) I have a hard time figuring out if this can ever cause an information leak (I don't think so), but nonetheless it does not hurt to increase the robustness of the code. Fixes: 68e03de98507 ('ALSA: hda - hdmi: Do not expose eld data when eld is invalid') Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Cc: <stable@vger.kernel.org> # v3.9+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/hda/patch_hdmi.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 1f52b55d77c9..2191e2359315 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -448,7 +448,8 @@ static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
eld = &per_pin->sink_eld;
mutex_lock(&per_pin->lock);
- if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data)) {
+ if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data) ||
+ eld->eld_size > ELD_MAX_SIZE) {
mutex_unlock(&per_pin->lock);
snd_BUG();
return -EINVAL;