From 79d0e52b2d894f52ce8e575ac7671f4a87282e7f Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Wed, 6 Mar 2024 15:49:51 +0100
Subject: [PATCH] gpg: Fix a possible segv due to an uninitialized gcrypt
 context.

* g10/sign.c (sign_symencrypt_file): Initialize MD for the error case.
--

Reported-by: Falko Strenzke
Fixes-commit: 1ddd69935da629188dcf9215cd9e7a8f68b34a97
in the not yet released master branch.
---
 g10/sign.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/g10/sign.c b/g10/sign.c
index b6c4d2126..e00baf3e7 100644
--- a/g10/sign.c
+++ b/g10/sign.c
@@ -1586,7 +1586,7 @@ sign_symencrypt_file (ctrl_t ctrl, const char *fname, strlist_t locusr)
   compress_filter_context_t zfx;
   md_filter_context_t mfx;
   md_thd_filter_context_t mfx2 = NULL;
-  gcry_md_hd_t md;
+  gcry_md_hd_t md = NULL;
   text_filter_context_t tfx;
   cipher_filter_context_t cfx;
   iobuf_t inp = NULL;