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 | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -283,7 +283,8 @@ static const struct nla_policy nl80211_p [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] = { .type = NLA_BINARY, + .len = ETH_ALEN },
[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },