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Check remaining string length before access to avoid OOB access.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2020-01-06 22:25:47 +09:00
parent 59756aef14
commit c60bccaa94
1 changed files with 1 additions and 1 deletions
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src/string.c
+1 -1
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@@ -2502,7 +2502,7 @@ mrb_str_len_to_dbl(mrb_state *mrb, const char *s, size_t len, mrb_bool badcheck)
if (!p) return 0.0;
while (ISSPACE(*p)) p++;
if (p[0] == '0' && (p[1] == 'x' || p[1] == 'X')) {
if (pend - p > 2 && p[0] == '0' && (p[1] == 'x' || p[1] == 'X')) {
mrb_value x;
x = mrb_str_len_to_inum(mrb, p, pend-p, 0, badcheck);