[PATCH 1/2] nl80211: Fix possible Spectre-v1 for NL80211_TXRATE_HT
STALE2928d
From: Masashi Honma <hidden>
Date: 2018-09-25 02:15:21
Subsystem:
802.11 (including cfg80211/nl80211), the rest · Maintainers:
Johannes Berg, Linus Torvalds
Use array_index_nospec() to sanitize ridx with respect to speculation. Signed-off-by: Masashi Honma <redacted> --- net/wireless/nl80211.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0827cbd..3c469c1 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c@@ -3748,6 +3748,7 @@ static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, return false; /* check availability */ + ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN); if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) mcs[ridx] |= rbit; else
--
2.7.4