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| author | Dongliang Mu <mudongliangabcd@gmail.com> | 2021-06-16 10:48:33 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-23 14:41:26 +0200 |
| commit | 4252bf6c2b245f47011098113d405ffad6ad5d5b (patch) | |
| tree | 381df389ca2af875de195a1ed74f801b5a871155 /net/unix/af_unix.c | |
| parent | 217395c5ab15e92a4fd84fe77fab6b0b1bb4e456 (diff) | |
net: usb: fix possible use-after-free in smsc75xx_bind
[ Upstream commit 56b786d86694e079d8aad9b314e015cd4ac02a3d ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions