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wifi: mt76: mt7615: check devm_kasprintf() returned value

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commit 5acdc432f8 upstream.

devm_kasprintf() can return a NULL pointer on failure but this returned
value is not checked. Fix this lack and check the returned value.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 0bb4e9187e ("mt76: mt7615: fix hwmon temp sensor mem use-after-free")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://patch.msgid.link/20240905014753.353271-1-make24@iscas.ac.cn
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ma Ke 2024-09-05 09:47:53 +08:00 committed by Greg Kroah-Hartman
parent eed8db8203
commit c1ba1f2ca1
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/mediatek/mt76/mt7615/init.c
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@ -56,6 +56,9 @@ int mt7615_thermal_init(struct mt7615_dev *dev)
name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7615_%s", name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7615_%s",
wiphy_name(wiphy)); wiphy_name(wiphy));
if (!name)
return -ENOMEM;
hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, dev, hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, dev,
mt7615_hwmon_groups); mt7615_hwmon_groups);
if (IS_ERR(hwmon)) if (IS_ERR(hwmon))