In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btintel_pcie: validate TX skb length in send_sync
btintel_pcie_prepare_tx() copies skb->len bytes into a fixed
BTINTEL_PCIE_BUFFER_SIZE (4096) DMA slot via an unchecked memcpy.
Oversized packets are currently rejected only in
btintel_pcie_send_frame(); any future caller of
btintel_pcie_send_sync() would silently overflow the DMA buffer.
Add the bounds check in btintel_pcie_send_sync() itself, right
before skb_push() and the DMA copy.
References 3
https://git.kernel.org/stable/c/4b837ebd0ea21ae5cc26f02dc042edc6fe7b46b9
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/84f353256e170dc4865d45007d1bc446ed566da7
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c298a61e18029401486c40298a50fbeea7e7b663
416baaa9-dc9f-4396-8d5f-8c081fb06d67