From ffdde5932042600c6807d46c1550b28b0db6a3bc Mon Sep 17 00:00:00 2001
From: Navid Emamdoost <navid.emamdoost@gmail.com>
Date: Fri, 4 Oct 2019 14:29:16 -0500
Subject: [PATCH] crypto: user - fix memory leak in crypto_report
Git-commit: ffdde5932042600c6807d46c1550b28b0db6a3bc
Patch-mainline: v5.5-rc1
References: CVE-2019-19062,bsc#1157333

In crypto_report, a new skb is created via nlmsg_new(). This skb should
be released if crypto_report_alg() fails.

Fixes: a38f7907b926 ("crypto: Add userspace configuration API")
Cc: <stable@vger.kernel.org>
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 crypto/crypto_user.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -288,8 +288,10 @@ static int crypto_report(struct sk_buff
 drop_alg:
 	crypto_mod_put(alg);
 
-	if (err)
+	if (err) {
+		kfree_skb(skb);
 		return err;
+	}
 
 	return nlmsg_unicast(crypto_nlsk, skb, NETLINK_CB(in_skb).portid);
 }