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authorTakashi Iwai <tiwai@suse.de>2019-07-16 15:11:39 +0200
committerTakashi Iwai <tiwai@suse.de>2019-07-16 15:11:42 +0200
commit2f18f0033c602fdd3f4e1a52356fcef72da2d7c2 (patch)
tree684334300d1dcb5e934662a4e0845ce37393a2f5
parent04b899acc61f581b3a2d10a0caf3e50e52b3b85f (diff)
ALSA: usb-audio: Sanity checks for each pipe and EP types
(bsc#1051510). suse-commit: d819b43002d64420beabc8b1e2826188c73091df
-rw-r--r--sound/usb/helper.c17
-rw-r--r--sound/usb/helper.h1
-rw-r--r--sound/usb/quirks.c18
3 files changed, 33 insertions, 3 deletions
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index 7712e2b84183..b1cc9499c57e 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -76,6 +76,20 @@ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype
return NULL;
}
+/* check the validity of pipe and EP types */
+int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe)
+{
+ static const int pipetypes[4] = {
+ PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT
+ };
+ struct usb_host_endpoint *ep;
+
+ ep = usb_pipe_endpoint(dev, pipe);
+ if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
+ return -EINVAL;
+ return 0;
+}
+
/*
* Wrapper for usb_control_msg().
* Allocates a temp buffer to prevent dmaing from/to the stack.
@@ -88,6 +102,9 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
void *buf = NULL;
int timeout;
+ if (snd_usb_pipe_sanity_check(dev, pipe))
+ return -EINVAL;
+
if (size > 0) {
buf = kmemdup(data, size, GFP_KERNEL);
if (!buf)
diff --git a/sound/usb/helper.h b/sound/usb/helper.h
index 805c300dd004..98a31e57ffb7 100644
--- a/sound/usb/helper.h
+++ b/sound/usb/helper.h
@@ -6,6 +6,7 @@ unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
+int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe);
int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
__u8 request, __u8 requesttype, __u16 value, __u16 index,
void *data, __u16 size);
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 859f33170f72..a661bc33f53c 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -722,11 +722,13 @@ static int snd_usb_novation_boot_quirk(struct usb_device *dev)
static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
{
int err, actual_length;
-
/* "midi send" enable */
static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
+ void *buf;
- void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
+ if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x05)))
+ return -EINVAL;
+ buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
if (!buf)
return -ENOMEM;
err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
@@ -751,7 +753,11 @@ static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
{
- int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ int ret;
+
+ if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ return -EINVAL;
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1, 0, NULL, 0, 1000);
@@ -858,6 +864,8 @@ static int snd_usb_axefx3_boot_quirk(struct usb_device *dev)
dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n");
+ if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ return -EINVAL;
/* If the Axe-Fx III has not fully booted, it will timeout when trying
* to enable the audio streaming interface. A more generous timeout is
* used here to detect when the Axe-Fx III has finished booting as the
@@ -890,6 +898,8 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
{
int err, actual_length;
+ if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x01)))
+ return -EINVAL;
err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length,
&actual_length, 1000);
if (err < 0)
@@ -900,6 +910,8 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
memset(buf, 0, buf_size);
+ if (snd_usb_pipe_sanity_check(dev, usb_rcvintpipe(dev, 0x82)))
+ return -EINVAL;
err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size,
&actual_length, 1000);
if (err < 0)