Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 21/61] nl80211: Fix possible Spectre-v1 for NL80211_TXRATE_HT | Date | Tue, 16 Oct 2018 00:13:23 -0400 |
| |
From: Masashi Honma <masashi.honma@gmail.com>
[ Upstream commit 30fe6d50eb088783c8729c7d930f65296b2b3fa7 ]
Use array_index_nospec() to sanitize ridx with respect to speculation.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/wireless/nl80211.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 3de415bca391..5e7c9b361e8a 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3480,6 +3480,7 @@ 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 -- 2.17.1
| |