diff options
| author | Florian Westphal <fw@strlen.de> | 2016-04-01 14:17:22 +0200 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-07-10 23:07:33 -0400 |
| commit | 8163327a3a927c36f7c032bb67957e6c0f4ec27d (patch) | |
| tree | e62962238507daef0a3d15a96d62c4b10952c442 /Documentation/static-keys.txt | |
| parent | cf756388f8f34e02a338356b3685c46938139871 (diff) | |
netfilter: x_tables: validate targets of jumps
[ Upstream commit 36472341017529e2b12573093cc0f68719300997 ]
When we see a jump also check that the offset gets us to beginning of
a rule (an ipt_entry).
The extra overhead is negible, even with absurd cases.
300k custom rules, 300k jumps to 'next' user chain:
[ plus one jump from INPUT to first userchain ]:
Before:
real 0m24.874s
user 0m7.532s
sys 0m16.076s
After:
real 0m27.464s
user 0m7.436s
sys 0m18.840s
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'Documentation/static-keys.txt')
0 files changed, 0 insertions, 0 deletions