[Linux-kernel-mentees] [PATCH net] openvswitch: Prevent kernel-infoleak in ovs_ct_put_key()

David Miller davem at davemloft.net
Mon Aug 3 22:10:38 UTC 2020


From: Peilin Ye <yepeilin.cs at gmail.com>
Date: Fri, 31 Jul 2020 00:48:38 -0400

> ovs_ct_put_key() is potentially copying uninitialized kernel stack memory
> into socket buffers, since the compiler may leave a 3-byte hole at the end
> of `struct ovs_key_ct_tuple_ipv4` and `struct ovs_key_ct_tuple_ipv6`. Fix
> it by initializing `orig` with memset().
> 
> Cc: stable at vger.kernel.org

Please don't CC: stable for networking fixes.

> Fixes: 9dd7f8907c37 ("openvswitch: Add original direction conntrack tuple to sw_flow_key.")
> Suggested-by: Dan Carpenter <dan.carpenter at oracle.com>
> Signed-off-by: Peilin Ye <yepeilin.cs at gmail.com>

Applied and queued up for -stable, thank you.


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