6.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Barnabás Czémán <barnabas.czeman@xxxxxxxxxxxxxx>
[ Upstream commit 6200d947f050efdba4090dfefd8a01981363d954 ]
KASAN reported a memory allocation issue in wcn->chan_survey
due to incorrect size calculation.
This commit uses kcalloc to allocate memory for wcn->chan_survey,
ensuring proper initialization and preventing the use of uninitialized
values when there are no frames on the channel.
Fixes: 29696e0aa413 ("wcn36xx: Track SNR and RSSI for each RX frame")
Signed-off-by: Barnabás Czémán <barnabas.czeman@xxxxxxxxxxxxxx>
Acked-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Link: https://patch.msgid.link/20241104-wcn36xx-memory-allocation-v1-1-5ec901cf37b6@xxxxxxxxxxxxxx
Signed-off-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/ath/wcn36xx/main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index 8557d4826a46e..94d08d6ae1a3c 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -1590,7 +1590,10 @@ static int wcn36xx_probe(struct platform_device *pdev)
}
n_channels = wcn_band_2ghz.n_channels + wcn_band_5ghz.n_channels;
- wcn->chan_survey = devm_kmalloc(wcn->dev, n_channels, GFP_KERNEL);
+ wcn->chan_survey = devm_kcalloc(wcn->dev,
+ n_channels,
+ sizeof(struct wcn36xx_chan_survey),
+ GFP_KERNEL);
if (!wcn->chan_survey) {
ret = -ENOMEM;
goto out_wq;
--
2.39.5
