CVE-2025-38249
ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()
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ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() In snd_usb_get_audioformat_uac3(), the length value returned from snd_usb_ctl_msg() is used directly for memory allocation without validation. This length is controlled by the USB device. The allocated buffer is cast to a uac3_cluster_header_descriptor and its fields are accessed without verifying that the buffer is large enough. If the device returns a smaller than expected length, this leads to an out-of-bounds read. Add a length check to ensure the buffer is large enough for uac3_cluster_header_descriptor.
Reserved 2025-04-16 | Published 2025-07-09 | Updated 2025-07-10 | Assigner Linuxgit.kernel.org/...c/c3fb926abe90d86f5e3055e0035f04d9892a118b
git.kernel.org/...c/6eb211788e1370af52a245d4d7da35c374c7b401
git.kernel.org/...c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8
git.kernel.org/...c/0ee87c2814deb5e42921281116ac3abcb326880b
git.kernel.org/...c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36
git.kernel.org/...c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a
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