From 836d17e85e96c21b4343a548d5108b735292dec2 Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Tue, 30 Jun 2026 01:44:40 +0200
Subject: [PATCH] free contexts in hmac no failure

---
 lib/hmac.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/hmac.c b/lib/hmac.c
index a4d6ebdd8a..bba98aeec5 100644
--- a/lib/hmac.c
+++ b/lib/hmac.c
@@ -58,6 +58,8 @@ struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams,
   if(!ctxt)
     return ctxt;
 
+  memset(ctxt, 0, i);
+
   ctxt->hash = hashparams;
   ctxt->hashctxt1 = (void *)(ctxt + 1);
   ctxt->hashctxt2 = (void *)((char *)ctxt->hashctxt1 + hashparams->ctxtsize);
@@ -94,6 +96,8 @@ struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams,
   return ctxt;
 
 fail:
+  hashparams->hfinal(NULL, ctxt->hashctxt1);
+  hashparams->hfinal(NULL, ctxt->hashctxt2);
   curlx_free(ctxt);
   return NULL;
 }