kernel/linux.git/sound/usb/misc, branch v6.12.92

ALSA: ua101: Reject too-short USB descriptors

2026-06-01T15:46:17+00:00

commit b59d5c51bb328a60749b4dd5fe7e649bfb4089b4 upstream. find_format_descriptor() walks the class-specific interface extras by advancing with bLength. It rejects descriptors that extend past the remaining buffer, but it does not reject descriptor lengths smaller than a USB descriptor header. Reject too-short descriptors before using bLength to advance the local scan. This keeps the UA-101 parser robust against malformed descriptor data and matches the usual USB descriptor walking rules. Fixes: 63978ab3e3e9 ("sound: add Edirol UA-101 support") Cc: stable@vger.kernel.org Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260519-alsa-ua101-desc-len-v1-1-4307d1a5e054@gmail.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

sound: ua101: fix division by zero at probe

2026-05-14T13:29:21+00:00

commit d1f73f169c1014463b5060e3f60813e13ddc7b87 upstream. Add a missing sanity check for bNrChannels in detect_usb_format() to prevent a division by zero in playback_urb_complete() and capture_urb_complete(). USB core does not validate class-specific descriptor fields such as bNrChannels, so drivers must verify them before use. If a device provides bNrChannels = 0, frame_bytes becomes zero and is later used as a divisor in the URB completion handlers, leading to a kernel crash. Fixes: 63978ab3e3e9 ("sound: add Edirol UA-101 support") Cc: stable@vger.kernel.org Signed-off-by: SeungJu Cheon Link: https://patch.msgid.link/20260426111239.103296-1-suunj1331@gmail.com Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: usb: Use -y instead of -objs in Makefile

2024-05-08T16:17:53+00:00

*-objs suffix is reserved rather for (user-space) host programs while usually *-y suffix is used for kernel drivers (although *-objs works for that purpose for now). Let's correct the old usages of *-objs in Makefiles. Signed-off-by: Takashi Iwai Reviewed-by: Andy Shevchenko Reviewed-by: Jaroslav Kysela Link: https://lore.kernel.org/r/20240507135513.14919-6-tiwai@suse.de

ALSA: ua101: fix division by zero at probe

2021-10-27T06:23:30+00:00

Add the missing endpoint max-packet sanity check to probe() to avoid division by zero in alloc_stream_buffers() in case a malicious device has broken descriptors (or when doing descriptor fuzz testing). Note that USB core will reject URBs submitted for endpoints with zero wMaxPacketSize but that drivers doing packet-size calculations still need to handle this (cf. commit 2548288b4fb0 ("USB: Fix: Don't skip endpoint descriptors with maxpacket=0")). Fixes: 63978ab3e3e9 ("sound: add Edirol UA-101 support") Cc: stable@vger.kernel.org # 2.6.34 Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20211026095401.26522-1-johan@kernel.org Signed-off-by: Takashi Iwai

module: remove never implemented MODULE_SUPPORTED_DEVICE

2021-03-17T20:16:18+00:00

MODULE_SUPPORTED_DEVICE was added in pre-git era and never was implemented. We can safely remove it, because the kernel has grown to have many more reliable mechanisms to determine if device is supported or not. Signed-off-by: Leon Romanovsky Signed-off-by: Linus Torvalds

ALSA: ua101: Replace tasklet with work

2020-09-09T16:33:15+00:00

The tasklet is an old API that should be deprecated, usually can be converted to another decent API. In UA101 driver, a tasklet is still used for handling the output URBs. It can be achieved gracefully with a work queued in the high-prio system workqueue, too. This patch replaces the tasklet usage in UA101 driver with a simple work. Link: https://lore.kernel.org/r/20200903104131.21097-5-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: ua101: convert tasklets to use new tasklet_setup() API

2020-09-02T11:27:07+00:00

In preparation for unconditionally passing the struct tasklet_struct pointer to all tasklet callbacks, switch to using the new tasklet_setup() and from_tasklet() to pass the tasklet pointer explicitly. Signed-off-by: Romain Perier Signed-off-by: Allen Pais Link: https://lore.kernel.org/r/20200902040221.354941-11-allen.lkml@gmail.com Signed-off-by: Takashi Iwai

ALSA: usb: Drop superfluous ioctl PCM ops

2019-12-11T06:25:34+00:00

PCM core deals the empty ioctl field now as default(*). Let's kill the redundant lines. (*) commit fc033cbf6fb7 ("ALSA: pcm: Allow NULL ioctl ops") Link: https://lore.kernel.org/r/20191210061145.24641-22-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: ua101: Use managed buffer allocation

2019-12-11T06:25:23+00:00

Clean up the driver with the new managed buffer allocation API. The hw_free callback became superfluous and got dropped. Link: https://lore.kernel.org/r/20191209094943.14984-69-tiwai@suse.de Signed-off-by: Takashi Iwai

ALSA: ua101: Convert to the common vmalloc memalloc

2019-11-06T14:47:42+00:00

The recent change (*) in the ALSA memalloc core allows us to drop the special vmalloc-specific allocation and page handling. This patch coverts to the common code. (*) 1fe7f397cfe2: ALSA: memalloc: Add vmalloc buffer allocation support 7e8edae39fd1: ALSA: pcm: Handle special page mapping in the default mmap handler Link: https://lore.kernel.org/r/20191105151856.10785-15-tiwai@suse.de Signed-off-by: Takashi Iwai