5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stanislaw Gruszka stf_xl@wp.pl
[ Upstream commit 0de19d5ae0b2c5b18b88c5c7f0442f707a207409 ]
Limit rate_idx to IL_LAST_OFDM_RATE for 5GHz band for thinkable case the index is incorrect.
Reported-by: Fedor Pchelkin pchelkin@ispras.ru Reported-by: Alexei Safin a.safin@rosa.ru Signed-off-by: Stanislaw Gruszka stf_xl@wp.pl Reviewed-by: Fedor Pchelkin pchelkin@ispras.ru Link: https://patch.msgid.link/20250525144524.GA172583@wp.pl Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/intel/iwlegacy/4965-mac.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlegacy/4965-mac.c b/drivers/net/wireless/intel/iwlegacy/4965-mac.c index 20c933602f0a..31f1c57450d4 100644 --- a/drivers/net/wireless/intel/iwlegacy/4965-mac.c +++ b/drivers/net/wireless/intel/iwlegacy/4965-mac.c @@ -1573,8 +1573,11 @@ il4965_tx_cmd_build_rate(struct il_priv *il, || rate_idx > RATE_COUNT_LEGACY) rate_idx = rate_lowest_index(&il->bands[info->band], sta); /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ - if (info->band == NL80211_BAND_5GHZ) + if (info->band == NL80211_BAND_5GHZ) { rate_idx += IL_FIRST_OFDM_RATE; + if (rate_idx > IL_LAST_OFDM_RATE) + rate_idx = IL_LAST_OFDM_RATE; + } /* Get PLCP rate for tx_cmd->rate_n_flags */ rate_plcp = il_rates[rate_idx].plcp; /* Zero out flags for this packet */