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| author |   Florian Westphal <fw@strlen.de> | 2015-12-08 23:35:19 +0100 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2015-12-09 14:26:31 +0100 |
| commit | e97ac12859dbf4d3ee0eddb9798867541d1d1e1e (patch) | |
| tree | edb988527d916389a065d447fbc830870ab82933 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | netfilter: nf_tables: wrap tracing with a static key (diff) | |
| download | linux-dev-e97ac12859dbf4d3ee0eddb9798867541d1d1e1e.tar.xz linux-dev-e97ac12859dbf4d3ee0eddb9798867541d1d1e1e.zip | |
netfilter: ipv6: nf_defrag: fix NULL deref panic
Valdis reports NULL deref in nf_ct_frag6_gather.
Problem is bogus use of skb_queue_walk() -- we miss first skb in the list
since we start with head->next instead of head.
In case the element we're looking for was head->next we won't find
a result and then trip over NULL iter.
(defrag uses plain NULL-terminated list rather than one terminated by
head-of-list-pointer, which is what skb_queue_walk expects).
Fixes: 029f7f3b8701cc7a ("netfilter: ipv6: nf_defrag: avoid/free clone operations")
Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Tested-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions