Plug leak of bm->buf->data

BIO_new(BIO_s_mem()) now allocates this pointer, so we need to free it
before assigning to it.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libcrypto/bio/bss_mem.c b/src/lib/libcrypto/bio/bss_mem.c
index f977a123a7..0fa6317a2b 100644
--- a/src/lib/libcrypto/bio/bss_mem.c
+++ b/src/lib/libcrypto/bio/bss_mem.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: bss_mem.c,v 1.26 2025/05/24 19:45:34 tb Exp $ */
+/* $OpenBSD: bss_mem.c,v 1.27 2025/05/31 11:31:16 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -140,6 +140,7 @@ BIO_new_mem_buf(const void *buf, int buf_len)
                 return NULL;
 
         bm = bio->ptr;
+        free(bm->buf->data);
         bm->buf->data = (void *)buf; /* Trust in the BIO_FLAGS_MEM_RDONLY flag. */
         bm->buf->length = buf_len;
         bm->buf->max = buf_len;