Xiaolong Huang ad41706c77 net: qrtr: fix another OOB Read in qrtr_endpoint_post ... commit 7e78c597c3ebfd0cb329aa09a838734147e4f117 upstream. This check was incomplete, did not consider size is 0: if (len != ALIGN(size, 4) + hdrlen) goto err; if size from qrtr_hdr is 0, the result of ALIGN(size, 4) will be 0, In case of len == hdrlen and size == 0 in header this check won't fail and if (cb->type == QRTR_TYPE_NEW_SERVER) { /* Remote node endpoint can bridge other distant nodes */ const struct qrtr_ctrl_pkt *pkt = data + hdrlen; qrtr_node_assign(node, le32_to_cpu(pkt->server.node)); } will also read out of bound from data, which is hdrlen allocated block. Fixes: 194ccc8829 ("net: qrtr: Support decoding incoming v2 packets") Fixes: ad9d24c9429e ("net: qrtr: fix OOB Read in qrtr_endpoint_post") Signed-off-by: Xiaolong Huang <butterflyhuangxx@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-09-03 10:09:21 +02:00
..
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	2021-05-07 11:04:31 +02:00
ns.c	net: qrtr: ns: Fix error return code in qrtr_ns_init()	2021-07-14 16:56:16 +02:00
qrtr.c	net: qrtr: fix another OOB Read in qrtr_endpoint_post	2021-09-03 10:09:21 +02:00
qrtr.h	net: qrtr: Fix FIXME related to qrtr_ns_init()	2020-03-03 17:52:21 -08:00
smd.c
tun.c	net: qrtr: Fix memory leak in qrtr_tun_open	2021-03-04 11:38:47 +01:00