path: root/net
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authorPavel Skripkin <>2021-06-12 17:51:22 +0300
committerDavid S. Miller <>2021-06-14 12:28:16 -0700
commit58af3d3d54e87bfc1f936e16c04ade3369d34011 (patch)
tree32cb8fc66912fa15130ecd83b6909f8fc815ffd3 /net
parent09427c1915f754ebe7d3d8e54e79bbee48afe916 (diff)
net: caif: fix memory leak in ldisc_open
Syzbot reported memory leak in tty_init_dev(). The problem was in unputted tty in ldisc_open() static int ldisc_open(struct tty_struct *tty) { ... ser->tty = tty_kref_get(tty); ... result = register_netdevice(dev); if (result) { rtnl_unlock(); free_netdev(dev); return -ENODEV; } ... } Ser pointer is netdev private_data, so after free_netdev() this pointer goes away with unputted tty reference. So, fix it by adding tty_kref_put() before freeing netdev. Reported-and-tested-by: Signed-off-by: Pavel Skripkin <> Signed-off-by: David S. Miller <>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions