Harden ASN.1 BIO handling of large amounts of data.

[openssl.git] / crypto / rand / rand_os2.c

diff --git a/crypto/rand/rand_os2.c b/crypto/rand/rand_os2.c
index 9c4a137bb7bed3229cb84156b632b05757c563fc..706ab1e8172b16b827f839a91781e8b9ac3d8702 100644 (file)
--- a/crypto/rand/rand_os2.c
+++ b/crypto/rand/rand_os2.c
@@ -149,6 +149,9 @@ int RAND_poll(void)
     if (DosQuerySysState) {
         char *buffer = OPENSSL_malloc(256 * 1024);
 
+        if (!buffer)
+            return 0;
+
         if (DosQuerySysState(0x1F, 0, 0, 0, buffer, 256 * 1024) == 0) {
             /*
              * First 4 bytes in buffer is a pointer to the thread count there