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authorMatthew Smith <mgsmith@netgate.com>2018-04-30 16:39:13 -0500
committerDamjan Marion <dmarion.lists@gmail.com>2018-05-03 19:07:53 +0000
commit42ae29a2fe9b12bbbc0c6495b2077252545c9cb9 (patch)
treeccc68b57c02b12e4bcde7332e15f479fce327b19 /MAINTAINERS
parent6f1c48db24b5731176d57121c47040339e6d7f6c (diff)
NAT44 segv on unknown proto on inside interface
When a packet with an unknown proto arrives on an inside interface and there are no existing sessions for the source address, a segv occurs. snat_in2out_unknown_proto() finds the head of the sessions dlist, fetches the address of the next element using head->next, and then dereferences the next element. On the first packet received from a source address, head->next is ~0, so this results in a segv. Check that the session list is not empty before trying to traverse it. Also removed unnecessary lookup against tsm->user_hash. Prior call to nat_user_get_or_create() already performed that lookup and added a user if one didn't exist. Change-Id: If73e79aa2f8e3962ab7b876ecf55aea40d7a5472 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
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