From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Daniel Axtens Date: Wed, 13 Jan 2021 22:19:01 +1100 Subject: [PATCH] kern/misc: Always set *end in grub_strtoull() Currently, if there is an error in grub_strtoull(), *end is not set. This differs from the usual behavior of strtoull(), and also means that some callers may use an uninitialized value for *end. Set *end unconditionally. Signed-off-by: Daniel Axtens Reviewed-by: Daniel Kiper --- grub-core/kern/misc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/grub-core/kern/misc.c b/grub-core/kern/misc.c index 97378c48b..475f3e0ef 100644 --- a/grub-core/kern/misc.c +++ b/grub-core/kern/misc.c @@ -485,6 +485,10 @@ grub_strtoull (const char *str, const char ** const end, int base) { grub_error (GRUB_ERR_OUT_OF_RANGE, N_("overflow is detected")); + + if (end) + *end = (char *) str; + return ~0ULL; } @@ -496,6 +500,10 @@ grub_strtoull (const char *str, const char ** const end, int base) { grub_error (GRUB_ERR_BAD_NUMBER, N_("unrecognized number")); + + if (end) + *end = (char *) str; + return 0; }