[ Sasha's backport helper bot ]
Hi,
Found matching upstream commit: b909df18ce2a998afef81d58bbd1a05dc0788c40
Status in newer kernel trees:
6.12.y | Not found
6.11.y | Not found
6.6.y | Not found
6.1.y | Not found
5.15.y | Not found
5.10.y | Not found
5.4.y | Not found
Note: The patch differs from the upstream commit:
---
1: b909df18ce2a9 ! 1: 0b77f74c2156e ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices
@@ Commit message
Cc: stable@xxxxxxxxxx
Link: https://patch.msgid.link/20241120124144.3814457-1-bsevens@xxxxxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
+ (cherry picked from commit b909df18ce2a998afef81d58bbd1a05dc0788c40)
+ Signed-off-by: Benoît Sevens <bsevens@xxxxxxxxxx>
## sound/usb/quirks.c ##
@@ sound/usb/quirks.c: int snd_usb_create_quirk(struct snd_usb_audio *chip,
@@ sound/usb/quirks.c: static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
err = usb_reset_configuration(dev);
if (err < 0)
-@@ sound/usb/quirks.c: static void mbox3_setup_defaults(struct usb_device *dev)
- static int snd_usb_mbox3_boot_quirk(struct usb_device *dev)
- {
- struct usb_host_config *config = dev->actconfig;
-+ struct usb_device_descriptor new_device_descriptor;
- int err;
- int descriptor_size;
-
-@@ sound/usb/quirks.c: static int snd_usb_mbox3_boot_quirk(struct usb_device *dev)
- dev_dbg(&dev->dev, "MBOX3: device initialised!\n");
-
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
-- &dev->descriptor, sizeof(dev->descriptor));
-- config = dev->actconfig;
-+ &new_device_descriptor, sizeof(new_device_descriptor));
- if (err < 0)
- dev_dbg(&dev->dev, "MBOX3: error usb_get_descriptor: %d\n", err);
-+ if (new_device_descriptor.bNumConfigurations > dev->descriptor.bNumConfigurations)
-+ dev_dbg(&dev->dev, "MBOX3: error too large bNumConfigurations: %d\n",
-+ new_device_descriptor.bNumConfigurations);
-+ else
-+ memcpy(&dev->descriptor, &new_device_descriptor, sizeof(dev->descriptor));
-
- err = usb_reset_configuration(dev);
- if (err < 0)
---
Results of testing on various branches:
| Branch | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y | Success | Success |
