linux-kernel - [PATCH 4.19 006/293] qede: Fix memset corruption

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210920163933.475126262@linuxfoundation.org>
Date:   Mon, 20 Sep 2021 18:39:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Prabhakar Kushwaha <pkushwaha@...vell.com>,
        Ariel Elior <aelior@...vell.com>,
        Shai Malin <smalin@...vell.com>,
        Kees Cook <keescook@...omium.org>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 006/293] qede: Fix memset corruption

From: Shai Malin <smalin@...vell.com>

[ Upstream commit e543468869e2532f5d7926e8f417782b48eca3dc ]

Thanks to Kees Cook who detected the problem of memset that starting
from not the first member, but sized for the whole struct.
The better change will be to remove the redundant memset and to clear
only the msix_cnt member.

Signed-off-by: Prabhakar Kushwaha <pkushwaha@...vell.com>
Signed-off-by: Ariel Elior <aelior@...vell.com>
Signed-off-by: Shai Malin <smalin@...vell.com>
Reported-by: Kees Cook <keescook@...omium.org>
Reviewed-by: Kees Cook <keescook@...omium.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/qlogic/qede/qede_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 1aabb2e7a38b..756c5943f5e0 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -1676,6 +1676,7 @@ static void qede_sync_free_irqs(struct qede_dev *edev)
 	}
 
 	edev->int_info.used_cnt = 0;
+	edev->int_info.msix_cnt = 0;
 }
 
 static int qede_req_msix_irqs(struct qede_dev *edev)
@@ -2193,7 +2194,6 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
 	goto out;
 err4:
 	qede_sync_free_irqs(edev);
-	memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
 err3:
 	qede_napi_disable_remove(edev);
 err2:
-- 
2.30.2