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| author | Dongliang Mu <mudongliangabcd@gmail.com> | 2021-06-16 10:48:33 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-16 12:36:09 -0700 |
| commit | 56b786d86694e079d8aad9b314e015cd4ac02a3d (patch) | |
| tree | ba4eb051ad18da32e4c64d64cdfd430c765a7a87 /net | |
| parent | 8f269102baf788aecfcbbc6313b6bceb54c9b990 (diff) | |
net: usb: fix possible use-after-free in smsc75xx_bind
The commit 46a8b29c6306 ("net: usb: fix memory leak in smsc75xx_bind")
fails to clean up the work scheduled in smsc75xx_reset->
smsc75xx_set_multicast, which leads to use-after-free if the work is
scheduled to start after the deallocation. In addition, this patch
also removes a dangling pointer - dev->data[0].
This patch calls cancel_work_sync to cancel the scheduled work and set
the dangling pointer to NULL.
Fixes: 46a8b29c6306 ("net: usb: fix memory leak in smsc75xx_bind")
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions