Re: [v2][PATCH] regulator: pfuze100: Fix the global-out-of-bounds access in pfuze100_regulator_probe()
From: Mark Brown
Date: Thu Aug 25 2022 - 09:09:40 EST
On Thu, 25 Aug 2022 19:19:22 +0800, Xiaolei Wang wrote:
> 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.
> BUG: KASAN: global-out-of-bounds in pfuze100_regulator_probe+0x380/0x8b8
> Read of size 3968 at addr c3390640 by task swapper/0/1
>
> [...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next
Thanks!
[1/1] regulator: pfuze100: Fix the global-out-of-bounds access in pfuze100_regulator_probe()
commit: 78e1e867f44e6bdc72c0e6a2609a3407642fb30b
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
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Thanks,
Mark