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CVE-2022-28389: can: mcba_usb: mcba_usb_start_xmit(): fix double dev_kfree_skb in err… · torvalds/linux@04c9b00

mcba_usb_start_xmit in drivers/net/can/usb/mcba_usb.c in the Linux kernel through 5.17.1 has a double free.

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can: mcba_usb: mcba_usb_start_xmit(): fix double dev_kfree_skb in err…

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There is no need to call dev_kfree_skb() when usb_submit_urb() fails because can_put_echo_skb() deletes original skb and can_free_echo_skb() deletes the cloned skb.

Fixes: 51f3baa (“can: mcba_usb: Add support for Microchip CAN BUS Analyzer”) Link: https://lore.kernel.org/all/[email protected] Signed-off-by: Hangyu Hua [email protected] Signed-off-by: Marc Kleine-Budde [email protected]

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