This is a note to let you know that I've just added the patch titled regulator: pfuze100: Fix the global-out-of-bounds access in pfuze100_regulator_probe() to the 5.15-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: regulator-pfuze100-fix-the-global-out-of-bounds-acce.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 737c6742c37ae30efa4f72717c0c346b1695e2c6 Author: Xiaolei Wang <xiaolei.wang@xxxxxxxxxxxxx> Date: Thu Aug 25 19:19:22 2022 +0800 regulator: pfuze100: Fix the global-out-of-bounds access in pfuze100_regulator_probe() [ Upstream commit 78e1e867f44e6bdc72c0e6a2609a3407642fb30b ] The pfuze_chip::regulator_descs is an array of size PFUZE100_MAX_REGULATOR, the pfuze_chip::pfuze_regulators is the pointer to the real regulators of a specific device. The number of real regulator is supposed to be less than the PFUZE100_MAX_REGULATOR, so we should use the size of 'regulator_num * sizeof(struct pfuze_regulator)' in memcpy(). This fixes the out of bounds access bug reported by KASAN. Signed-off-by: Xiaolei Wang <xiaolei.wang@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20220825111922.1368055-1-xiaolei.wang@xxxxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c index aa55cfca9e40..a9a0bd918d1e 100644 --- a/drivers/regulator/pfuze100-regulator.c +++ b/drivers/regulator/pfuze100-regulator.c @@ -763,7 +763,7 @@ static int pfuze100_regulator_probe(struct i2c_client *client, ((pfuze_chip->chip_id == PFUZE3000) ? "3000" : "3001")))); memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators, - sizeof(pfuze_chip->regulator_descs)); + regulator_num * sizeof(struct pfuze_regulator)); ret = pfuze_parse_regulators_dt(pfuze_chip); if (ret)