| From 1fab1b89e2e8f01204a9c05a39fd0b6411a48593 Mon Sep 17 00:00:00 2001 |
| From: Markus Theil <markus.theil@tu-ilmenau.de> |
| Date: Tue, 29 Oct 2019 10:30:03 +0100 |
| Subject: nl80211: fix validation of mesh path nexthop |
| |
| From: Markus Theil <markus.theil@tu-ilmenau.de> |
| |
| commit 1fab1b89e2e8f01204a9c05a39fd0b6411a48593 upstream. |
| |
| Mesh path nexthop should be a ethernet address, but current validation |
| checks against 4 byte integers. |
| |
| Cc: stable@vger.kernel.org |
| Fixes: 2ec600d672e74 ("nl80211/cfg80211: support for mesh, sta dumping") |
| Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> |
| Link: https://lore.kernel.org/r/20191029093003.10355-1-markus.theil@tu-ilmenau.de |
| Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| net/wireless/nl80211.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/net/wireless/nl80211.c |
| +++ b/net/wireless/nl80211.c |
| @@ -377,7 +377,7 @@ const struct nla_policy nl80211_policy[N |
| [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, |
| [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, |
| .len = IEEE80211_MAX_MESH_ID_LEN }, |
| - [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, |
| + [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT, |
| |
| [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, |
| [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, |