Re: [PATCH 2/3] PM / devfreq: Fix buffer overflow in trans_stat_show

[Christian Marangi]

On Tue, Oct 24, 2023 at 08:30:15PM +0200, Christian Marangi wrote:
> Fix buffer overflow in trans_stat_show().
> 
> Convert simple snprintf to the more secure scnprintf with size of
> PAGE_SIZE.
> 
> Add condition checking if we are exceeding PAGE_SIZE and exit early from
> loop. Also add at the end a warning that we exceeded PAGE_SIZE and that
> stats is disabled.
> 
> Return -EFBIG in the case where we don't have enough space to write the
> full transition table.
> 
> Also document in the ABI that this function can return -EFBIG error.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218041
> Fixes: e552bbaf5b98 ("PM / devfreq: Add sysfs node for representing frequency transition information.")
> Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx>

Any news for this?

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	Ansuel