From: Jakub Zelenka <jakub.zelenka@openssl.foundation>
Date: Fri, 8 May 2026 14:41:08 +0000 (+0200)
Subject: Fix BIO dgram pair memleak in dgram_mem_init
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07cd5562d245462c4ddf78becfb0401dd3a4c99d;p=thirdparty%2Fopenssl.git

Fix BIO dgram pair memleak in dgram_mem_init

The created pair was not freed if ring buf init failed.

Fixes: 3a857b953216 "Implement BIO_s_dgram_mem() reusing the BIO_s_dgram_pair() code"

Reviewed-by: Matt Caswell <matt@openssl.foundation>
Reviewed-by: Frederik Wedel-Heinen <fwh.openssl@gmail.com>
Reviewed-by: Nikola Pajkovsky <nikolap@openssl.org>
Reviewed-by: Eugene Syromiatnikov <esyr@openssl.org>
MergeDate: Mon May 11 08:09:14 2026
(Merged from https://github.com/openssl/openssl/pull/31121)
---

diff --git a/crypto/bio/bss_dgram_pair.c b/crypto/bio/bss_dgram_pair.c
index bd9b7b892c1..d0136b4afc6 100644
--- a/crypto/bio/bss_dgram_pair.c
+++ b/crypto/bio/bss_dgram_pair.c
@@ -305,6 +305,7 @@ static int dgram_mem_init(BIO *bio)
     b = bio->ptr;
 
     if (ring_buf_init(&b->rbuf, b->req_buf_len) == 0) {
+        dgram_pair_free(bio);
         ERR_raise(ERR_LIB_BIO, ERR_R_BIO_LIB);
         return 0;
     }