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UBSan: Avoid unnecessary warning

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elems->mic might be NULL here, so do not try to decrement it by 2 even
if the result is not used anywhere due to a latter check for elems->mic
being NULL.

mesh_rsn.c:646:20: runtime error: pointer index expression with base 0x000000000000 overflowed to 0xfffffffffffffffe

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2019-02-23 14:03:59 +02:00
parent a9377bc380
commit cc4cdefc7f
1 changed files with 1 additions and 1 deletions
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2
wpa_supplicant/mesh_rsn.c
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@ -643,7 +643,7 @@ int mesh_rsn_process_ampe(struct wpa_supplicant *wpa_s, struct sta_info *sta,
size_t crypt_len;
const u8 *aad[] = { sta->addr, wpa_s->own_addr, cat };
const size_t aad_len[] = { ETH_ALEN, ETH_ALEN,
(elems->mic - 2) - cat };
elems->mic ? (elems->mic - 2) - cat : 0 };
size_t key_len;
if (!sta->sae) {