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python: add buffer length check in sock_recvfrom_into()

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This commit is contained in:
cinap_lenrek 2014-02-25 18:51:03 +01:00
parent ec37e34f07
commit c4fec93ab9
1 changed files with 6 additions and 0 deletions
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6
sys/src/cmd/python/Modules/socketmodule.c
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@ -2547,6 +2547,12 @@ sock_recvfrom_into(PySocketSockObject *s, PyObject *args, PyObject* kwds)
recvlen = buflen; recvlen = buflen;
} }
if (buflen < recvlen) {
PyErr_SetString(PyExc_ValueError,
"buffer too small for requested bytes");
return NULL;
}
readlen = sock_recvfrom_guts(s, buf, recvlen, flags, &addr); readlen = sock_recvfrom_guts(s, buf, recvlen, flags, &addr);
if (readlen < 0) { if (readlen < 0) {
/* Return an error */ /* Return an error */