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| author | Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> | 2018-06-01 10:16:58 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-01 16:39:24 +0200 |
| commit | af066ed3d45551e703d95d7e6c67d36a63809bc2 (patch) | |
| tree | 9b3e15ec82a6f5ad51dfdb06a6291a2e1af96a04 /net/sched | |
| parent | virtio_net: fix error return code in virtnet_probe() (diff) | |
| download | linux-af066ed3d45551e703d95d7e6c67d36a63809bc2.tar.xz linux-af066ed3d45551e703d95d7e6c67d36a63809bc2.zip | |
rtnetlink: Fix null-ptr-deref in rtnl_newlink
In rtnl_newlink(), NULL check is performed on m_ops however member of
ops is accessed. Fixed by accessing member of m_ops instead of ops.
[ 345.432629] BUG: KASAN: null-ptr-deref in rtnl_newlink+0x400/0x1110
[ 345.432629] Read of size 4 at addr 0000000000000088 by task ip/986
[ 345.432629]
[ 345.432629] CPU: 1 PID: 986 Comm: ip Not tainted 4.17.0-rc6+ #9
[ 345.432629] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
[ 345.432629] Call Trace:
[ 345.432629] dump_stack+0xc6/0x150
[ 345.432629] ? dump_stack_print_info.cold.0+0x1b/0x1b
[ 345.432629] ? kasan_report+0xb4/0x410
[ 345.432629] kasan_report.cold.4+0x8f/0x91
[ 345.432629] ? rtnl_newlink+0x400/0x1110
[ 345.432629] rtnl_newlink+0x400/0x1110
[...]
Fixes: ccf8dbcd062a ("rtnetlink: Remove VLA usage")
Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
0 files changed, 0 insertions, 0 deletions