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| author | Alexander Duyck <alexander.h.duyck@redhat.com> | 2015-03-13 00:46:23 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-13 01:26:51 +0300 |
| commit | 3c9e9f7320f0138497ef7879c0903246746e0ed3 (patch) | |
| tree | eea60b4c1788a31f550af86c8afccd9e616f9ebf /net/ipv4/fib_trie.c | |
| parent | 80f1d68ccba70b1060c9c7360ca83da430f66bed (diff) | |
| download | linux-3c9e9f7320f0138497ef7879c0903246746e0ed3.tar.xz | |
fib_trie: Avoid NULL pointer if local table is not allocated
The function fib_unmerge assumed the local table had already been
allocated. If that is not the case however when custom rules are applied
then this can result in a NULL pointer dereference.
In order to prevent this we must check the value of the local table pointer
and if it is NULL simply return 0 as there is no local table to separate
from the main.
Fixes: 0ddcf43d5 ("ipv4: FIB Local/MAIN table collapse")
Reported-by: Madhu Challa <challa@noironetworks.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_trie.c')
0 files changed, 0 insertions, 0 deletions