Dmitry Safonov fffd3058ea netlink: Don't shift with UB on nlk->ngroups ...

[ Upstream commit 61f4b23769 ]

On i386 nlk->ngroups might be 32 or 0. Which leads to UB, resulting in
hang during boot.
Check for 0 ngroups and use (unsigned long long) as a type to shift.

Fixes: 7acf9d4237 ("netlink: Do not subscribe to non-existent groups").
Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-08-03 07:50:45 +02:00

..

af_netlink.c

netlink: Don't shift with UB on nlk->ngroups

2018-08-03 07:50:45 +02:00

af_netlink.h

af_netlink: ensure that NLMSG_DONE never fails in dumps

2017-11-24 08:37:03 +01:00

diag.c

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genetlink.c

netlink: avoid a double skb free in genlmsg_mcast()

2018-03-31 18:10:41 +02:00

Kconfig

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Makefile

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