| commit | 7690aa1cdf7c4565ad6b013b324c28b685505e24 | [log] [tgz] |
|---|---|---|
| author | Johannes Berg <johannes.berg@intel.com> | Thu Apr 30 22:13:06 2020 +0200 |
| committer | David S. Miller <davem@davemloft.net> | Thu Apr 30 17:51:41 2020 -0700 |
| tree | b033fd6f80a1eb1972935660663321c1168c7f59 | |
| parent | 47a1494b8208461094923400c396ce4b8163c064 [diff] |
netlink: limit recursion depth in policy validation Now that we have nested policies, we can theoretically recurse forever parsing attributes if a (sub-)policy refers back to a higher level one. This is a situation that has happened in nl80211, and we've avoided it there by not linking it. Add some code to netlink parsing to limit recursion depth. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>