Xiaolong Huang a6b049aeef net: qrtr: fix another OOB Read in qrtr_endpoint_post ... commit 7e78c597c3 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: ad9d24c942 ("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 10:08:12 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
qrtr.c	net: qrtr: fix another OOB Read in qrtr_endpoint_post	2021-09-03 10:08:12 +02:00
qrtr.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
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	2021-03-04 10:26:53 +01:00