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fix missing check
This commit is contained in:
Sergio R. Caprile authored and GitHub committed 2026-08-11 09:10:46 -03:00
2 parents 5cdb25f05a a8b4ae95db
commit a6deed5868
2 files changed
+4 -8
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mongoose.c
+2 -4
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@@ -16684,16 +16684,14 @@ static int mg_der_to_tlv(uint8_t *der, size_t dersz, struct mg_der_tlv *tlv) {
if (tlv->len > 0x7f) { // long-form length
uint32_t i;
n = tlv->len - 0x80;
if (n > 4 || dersz < (2 + n)) return -1;
if (n == 0 || n > 4 || dersz < (2 + n)) return -1;
tlv->len = 0;
for (i = 0; i < n; i++) {
tlv->len = (tlv->len << 8) | der[2 + i];
}
if (n > (dersz - 2)) return -1;
tlv->value += n;
} else {
if (der + dersz < tlv->value + tlv->len) return -1;
}
if (tlv->len > dersz - (size_t) (tlv->value - der)) return -1;
return (int) n;
}
src/tls_builtin.c
+2 -4
View File
@@ -194,16 +194,14 @@ static int mg_der_to_tlv(uint8_t *der, size_t dersz, struct mg_der_tlv *tlv) {
if (tlv->len > 0x7f) { // long-form length
uint32_t i;
n = tlv->len - 0x80;
if (n > 4 || dersz < (2 + n)) return -1;
if (n == 0 || n > 4 || dersz < (2 + n)) return -1;
tlv->len = 0;
for (i = 0; i < n; i++) {
tlv->len = (tlv->len << 8) | der[2 + i];
}
if (n > (dersz - 2)) return -1;
tlv->value += n;
} else {
if (der + dersz < tlv->value + tlv->len) return -1;
}
if (tlv->len > dersz - (size_t) (tlv->value - der)) return -1;
return (int) n;
}