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luks2: fix off-by-one error in uint64 validation

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This commit is contained in:
Ondrej Kozina
2017-11-22 19:06:00 +01:00
committed by Milan Broz
parent 304bdd7d0d
commit 3c839f44d8
1 changed files with 1 additions and 2 deletions
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3
lib/luks2/luks2_json_metadata.c
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@@ -184,7 +184,6 @@ uint32_t json_object_get_uint32(json_object *jobj)
}
/* jobj has to be json_type_string and numbered */
/* FIXME: sscanf() instead? */
static json_bool json_str_to_uint64(json_object *jobj, uint64_t *value)
{
char *endptr;
@@ -192,7 +191,7 @@ static json_bool json_str_to_uint64(json_object *jobj, uint64_t *value)
errno = 0;
tmp = strtoull(json_object_get_string(jobj), &endptr, 10);
if (*endptr || errno || tmp >= UINT64_MAX) {
if (*endptr || errno || tmp > UINT64_MAX) {
log_dbg("Failed to parse uint64_t type from string %s.",
json_object_get_string(jobj));
*value = 0;