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Commit 87563a04 authored by Duoming Zhou's avatar Duoming Zhou Committed by Jakub Kicinski
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ax25: fix reference count leaks of ax25_dev



The previous commit d01ffb9e ("ax25: add refcount in ax25_dev
to avoid UAF bugs") introduces refcount into ax25_dev, but there
are reference leak paths in ax25_ctl_ioctl(), ax25_fwd_ioctl(),
ax25_rt_add(), ax25_rt_del() and ax25_rt_opt().

This patch uses ax25_dev_put() and adjusts the position of
ax25_addr_ax25dev() to fix reference cout leaks of ax25_dev.

Fixes: d01ffb9e ("ax25: add refcount in ax25_dev to avoid UAF bugs")
Signed-off-by: default avatarDuoming Zhou <duoming@zju.edu.cn>
Reviewed-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20220203150811.42256-1-duoming@zju.edu.cn


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 80d46090
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