linux/net/qrtr
Bjorn Andersson 47a017f339 net: qrtr: Avoid potential use after free in MHI send
It is possible that the MHI ul_callback will be invoked immediately
following the queueing of the skb for transmission, leading to the
callback decrementing the refcount of the associated sk and freeing the
skb.

As such the dereference of skb and the increment of the sk refcount must
happen before the skb is queued, to avoid the skb to be used after free
and potentially the sk to drop its last refcount..

Fixes: 6e728f3213 ("net: qrtr: Add MHI transport layer")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-21 11:01:03 -07:00
..
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile net: qrtr: Add MHI transport layer 2020-05-07 13:21:12 -07:00
mhi.c net: qrtr: Avoid potential use after free in MHI send 2021-04-21 11:01:03 -07:00
ns.c net: qrtr: fix null-ptr-deref in qrtr_ns_remove 2021-01-05 16:50:09 -08:00
qrtr.c net: qrtr: Fix memory leak on qrtr_tx_wait failure 2021-03-30 13:48:29 -07:00
qrtr.h net: qrtr: fix null-ptr-deref in qrtr_ns_remove 2021-01-05 16:50:09 -08:00
smd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
tun.c net: qrtr: Fix memory leak in qrtr_tun_open 2021-02-23 15:38:22 -08:00