Pavel Skripkin 960b08dd36 net: qrtr: fix OOB Read in qrtr_endpoint_post ... [ Upstream commit ad9d24c9429e2159d1e279dc3a83191ccb4daf1d ] Syzbot reported slab-out-of-bounds Read in qrtr_endpoint_post. The problem was in wrong _size_ type: if (len != ALIGN(size, 4) + hdrlen) goto err; If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293 in header this check won't fail and skb_put_data(skb, data + hdrlen, size); will read out of bound from data, which is hdrlen allocated block. Fixes: 194ccc8829 ("net: qrtr: Support decoding incoming v2 packets") Reported-and-tested-by: syzbot+1917d778024161609247@syzkaller.appspotmail.com Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-06-23 14:42:45 +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 the incorrect usage of rcu_read_lock()	2020-10-06 06:01:35 -07:00
qrtr.c	net: qrtr: fix OOB Read in qrtr_endpoint_post	2021-06-23 14:42:45 +02:00
qrtr.h	net: qrtr: Fix FIXME related to qrtr_ns_init()	2020-03-03 17:52:21 -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	2021-03-04 11:38:47 +01:00