random: Release memory in DRBG.

* random/random-drbg.c (_gcry_rngdrbg_close_fds): Release DRBG_STATE.

--

Fixes-commit: 204be8a385ae6140175e3b495989a261410c34d0
GnuPG-bug-id: 5636
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/random/random-drbg.c b/random/random-drbg.c
index 500ae645..70ede2a4 100644
--- a/random/random-drbg.c
+++ b/random/random-drbg.c
@@ -1863,8 +1863,9 @@ _gcry_rngdrbg_reinit (const char *flagstr, gcry_buffer_t *pers, int npers)
   return ret;
 }
 
-/* Try to close the FDs of the random gather module.  This is
- * currently only implemented for rndlinux. */
+/* Release resources used by this DRBG module.  That is, close the FDs
+ * of the random gather module (if any), and release memory used.
+ */
 void
 _gcry_rngdrbg_close_fds (void)
 {
@@ -1878,6 +1879,7 @@ _gcry_rngdrbg_close_fds (void)
   if (drbg_state)
     {
       drbg_uninstantiate (drbg_state);
+      xfree (drbg_state);
       drbg_state = NULL;
     }
   drbg_unlock ();