asn1: fix use-after-free in asn1_write

If the talloc_realloc() fails, asn1_write calls talloc_free on the
context and then immediately dereferences the pointer.

Fix this by skipping the talloc_free here. Let the caller handle it.

Signed-off-by: Jeff Layton <jlayton@samba.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/asn1.c b/asn1.c
index ea50a23..4c0e480 100644
--- a/asn1.c
+++ b/asn1.c
@@ -47,7 +47,6 @@ bool asn1_write(struct asn1_data *data, const void *p, int len)
 		uint8_t *newp;
 		newp = talloc_realloc(data, data->data, uint8_t, data->ofs+len);
 		if (!newp) {
-			asn1_free(data);
 			data->has_error = true;
 			return false;
 		}