mirror of
https://github.com/torvalds/linux.git
synced 2026-10-07 22:37:45 -04:00
Oliver Hartkopp
ae64438be1
In commita6d190f8c7("can: skb: drop tx skb if in listen only mode") the priv->ctrlmode element is read even on virtual CAN interfaces that do not create the struct can_priv at startup. This out-of-bounds read may lead to CAN frame drops for virtual CAN interfaces like vcan and vxcan. This patch mainly reverts the original commit and adds a new helper for CAN interface drivers that provide the required information in struct can_priv. Fixes:a6d190f8c7("can: skb: drop tx skb if in listen only mode") Reported-by: Dariusz Stojaczyk <[email protected]> Cc: Vincent Mailhol <[email protected]> Cc: Max Staudt <[email protected]> Signed-off-by: Oliver Hartkopp <[email protected]> Acked-by: Vincent Mailhol <[email protected]> Link: https://lore.kernel.org/all/[email protected] Cc: [email protected] # 6.0.x [mkl: patch pch_can, too] Signed-off-by: Marc Kleine-Budde <[email protected]>