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91509973fe
The function util_path_exists() consumes its first parameter as format
string. Passing the user input specified to the chzdev option --export
as-is to the function opens up the possibility for a format string
injection.
Fixes: d542138868 ("zdev: use libutil provided path functions")
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>