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authorTobias Klauser <tklauser@distanz.ch>2015-04-21 18:12:58 +0200
committerTobias Klauser <tklauser@distanz.ch>2015-04-21 18:12:58 +0200
commitfa6e21e9393f814f9656460aeaa288dc543d6cec (patch)
tree53544d9b25c91e9a1ea417f966933180fe4efa01 /proto_80211_mac_hdr.c
parent679e6211238039322272e0d3d085fab0d7c5c91d (diff)
dissectors: 80211_mac_hdr: Check return value of pkt_pull
Prevent a NULL pointer dereference if (for whatever reason) pkt_pull returns NULL. This issue was discovered using the Coverity scanner. Fixes: 9278bb65 ("netsniff-ng: Dump basic radiotap header info") Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'proto_80211_mac_hdr.c')
-rw-r--r--proto_80211_mac_hdr.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/proto_80211_mac_hdr.c b/proto_80211_mac_hdr.c
index 0705eec..199c4e7 100644
--- a/proto_80211_mac_hdr.c
+++ b/proto_80211_mac_hdr.c
@@ -3154,6 +3154,8 @@ static void ieee80211(struct pkt_buff *pkt)
rtap = (struct ieee80211_radiotap_header *)pkt_pull(pkt,
sizeof(*rtap));
+ if (rtap == NULL)
+ return;
tprintf(" [ Radiotap ");
tprintf("Version (%u), ", rtap->version);