can: raw: add missing refcount for memory leak fix
commit c275a176 upstream. Commit ee8b94c8 ("can: raw: fix receiver memory leak") introduced a new reference to the CAN netdevice that has assigned CAN filters. But this new ro->dev reference did not maintain its own refcount which lead to another KASAN use-after-free splat found by Eric Dumazet. This patch ensures a proper refcount for the CAN nedevice. Fixes: ee8b94c8 ("can: raw: fix receiver memory leak") Reported-by:Eric Dumazet <edumazet@google.com> Cc: Ziyang Xuan <william.xuanziyang@huawei.com> Signed-off-by:
Oliver Hartkopp <socketcan@hartkopp.net> Link: https://lore.kernel.org/r/20230821144547.6658-3-socketcan@hartkopp.net Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
b7803afc
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