| Message ID | Y+D9hPQrHfWBJhXz@kili |
|---|---|
| State | New |
| Headers | show |
| Series | ath5k: fix an off by one check in ath5k_eeprom_read_freq_list() | expand |
On Mon, Feb 06, 2023 at 04:15:48PM +0300, Dan Carpenter wrote: > 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@gmail.com> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Luis
Dan Carpenter <error27@gmail.com> wrote: > 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@gmail.com> > Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Patch applied to ath-next branch of ath.git, thanks. 4c856ee12df8 wifi: ath5k: fix an off by one check in ath5k_eeprom_read_freq_list()
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c index d444b3d70ba2..58d3e86f6256 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,
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@gmail.com> --- drivers/net/wireless/ath/ath5k/eeprom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)