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authorDan Carpenter <dan.carpenter@linaro.org>2024-12-02 15:57:54 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-12-19 18:07:23 +0100
commit4e54dc4bbc602133217de301d9f814f3e6d22eee (patch)
tree82bff63591a16c0d0ce3076cefefa31178aba2d7 /lib/mpi/mpi-sub-ui.c
parentae7c1c5233237cd89bf1bb59fbcad516212c6f42 (diff)
ALSA: usb-audio: Fix a DMA to stack memory bug
commit f7d306b47a24367302bd4fe846854e07752ffcd9 upstream. The usb_get_descriptor() function does DMA so we're not allowed to use a stack buffer for that. Doing DMA to the stack is not portable all architectures. Move the "new_device_descriptor" from being stored on the stack and allocate it with kmalloc() instead. Fixes: b909df18ce2a ("ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices") Cc: stable@kernel.org Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://patch.msgid.link/60e3aa09-039d-46d2-934c-6f123026c2eb@stanley.mountain Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: BenoƮt Sevens <bsevens@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/mpi/mpi-sub-ui.c')
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