This is a note to let you know that I've just added the patch titled
wifi: ath5k: fix an off by one check in ath5k_eeprom_read_freq_list()
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-ath5k-fix-an-off-by-one-check-in-ath5k_eeprom_r.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 02fe2fab521f2a02e3e45abf78e50e32948e3e12
Author: Dan Carpenter <error27@xxxxxxxxx>
Date: Mon Feb 6 16:15:48 2023 +0300
wifi: ath5k: fix an off by one check in ath5k_eeprom_read_freq_list()
[ Upstream commit 4c856ee12df85aabd437c3836ed9f68d94268358 ]
This loop checks that i < max at the start of loop but then it does
i++ which could put it past the end of the array. It's harmless to
check again and prevent a potential out of bounds.
Fixes: 1048643ea94d ("ath5k: Clean up eeprom parsing and add missing calibration data")
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
Reviewed-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/Y+D9hPQrHfWBJhXz@kili
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 01163b3339451..92f5c8e830901 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -529,7 +529,7 @@ ath5k_eeprom_read_freq_list(struct ath5k_hw *ah, int *offset, int max,
ee->ee_n_piers[mode]++;
freq2 = (val >> 8) & 0xff;
- if (!freq2)
+ if (!freq2 || i >= max)
break;
pc[i++].freq = ath5k_eeprom_bin2freq(ee,
