[lvc-project] [PATCH] platform/x86: dell-wmi-sysman: Avoid buffer overflow in current_password_store()

[Ilpo Järvinen]

On Wed, 14 May 2025 12:12:55 +0000, Vladimir Moskovkin wrote:

> If the 'buf' array received from the user contains an empty string, the
> 'length' variable will be zero. Accessing the 'buf' array element with
> index 'length - 1' will result in a buffer overflow.
> 
> Add a check for an empty string.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> [...]


Thank you for your contribution, it has been applied to my local
review-ilpo-fixes branch. Note it will show up in the public
platform-drivers-x86/review-ilpo-fixes branch only once I've pushed my
local branch there, which might take a while.

The list of commits applied:
[1/1] platform/x86: dell-wmi-sysman: Avoid buffer overflow in current_password_store()
      commit: 4e89a4077490f52cde652d17e32519b666abf3a6

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 i.