netfilter: nftables: fix incorrect increment of loop counter

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The intention of the err_expr cleanup path is to iterate over the
allocated expr_array objects and free them, starting from i - 1 and
working down to the start of the array. Currently the loop counter
is being incremented instead of decremented and also the index i is
being used instead of k, repeatedly destroying the same expr_array
element.  Fix this by decrementing k and using k as the index into
expr_array.

Addresses-Coverity: ("Infinite loop")
Fixes: 8cfd9b0f85 ("netfilter: nftables: generalize set expressions support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Colin Ian King 2020-12-14 23:40:15 +00:00 • committed by Pablo Neira Ayuso

parent 3db1a3fa98

commit 161b838e25

1 changed files with 2 additions and 2 deletions

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net/netfilter/nf_tables_api.c

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