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mruby-pack/pack.c (read_tmpl): check integer overflow before casting.

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Yukihiro "Matz" Matsumoto
2022-11-10 22:21:12 +09:00
parent 3b56332952
commit 9fcfd01f20
1 changed files with 1 additions and 1 deletions
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mrbgems/mruby-pack/src/pack.c
+1 -1
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@@ -1306,7 +1306,7 @@ alias:
if (ISDIGIT(ch)) {
char *e;
mrb_int n;
if (!mrb_read_int(tptr+tmpl->idx, tptr+tlen, &e, &n)) {
if (!mrb_read_int(tptr+tmpl->idx, tptr+tlen, &e, &n) || INT_MAX < n) {
mrb_raise(mrb, E_RUNTIME_ERROR, "too big template length");
}
count = (int)n;