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| author | Johannes Berg <johannes@sipsolutions.net> | 2009-07-29 22:07:44 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-08-03 16:31:21 -0400 |
| commit | cd3468bad96c00b5a512f551674f36776129520e (patch) | |
| tree | b9b705149112b1403d5a23f09ae24a7eac515827 | |
| parent | eb4ad826419ab5b1260bc1625249114767d36bea (diff) | |
| download | linux-3.10-cd3468bad96c00b5a512f551674f36776129520e.tar.gz linux-3.10-cd3468bad96c00b5a512f551674f36776129520e.tar.bz2 linux-3.10-cd3468bad96c00b5a512f551674f36776129520e.zip | |
cfg80211: add two missing NULL pointer checks
These pointers can be NULL, the is_mesh() case isn't
ever hit in the current kernel, but cmp_ies() can be
hit under certain conditions.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@kernel.org [2.6.29, 2.6.30]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | net/wireless/scan.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 9271118e1fc..7e595ce24ee 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -118,7 +118,7 @@ static int cmp_ies(u8 num, u8 *ies1, size_t len1, u8 *ies2, size_t len2) if (!ie1 && !ie2) return 0; - if (!ie1) + if (!ie1 || !ie2) return -1; r = memcmp(ie1 + 2, ie2 + 2, min(ie1[1], ie2[1])); @@ -171,6 +171,8 @@ static bool is_mesh(struct cfg80211_bss *a, ie = find_ie(WLAN_EID_MESH_CONFIG, a->information_elements, a->len_information_elements); + if (!ie) + return false; if (ie[1] != IEEE80211_MESH_CONFIG_LEN) return false; |