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: <000000000000ae3dfd061da973b5@google.com>
Date: Sat, 20 Jul 2024 01:18:07 -0700
From: syzbot <syzbot+a81f2759d022496b40ab@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] Re: [syzbot] [net?] KMSAN: uninit-value in hsr_get_node (3)

For archival purposes, forwarding an incoming command email to
linux-kernel@...r.kernel.org.

***

Subject: Re: [syzbot] [net?] KMSAN: uninit-value in hsr_get_node (3)
Author: aha310510@...il.com

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

---
 net/hsr/hsr_framereg.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 73bc6f659812..b7d5b9da881a 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -224,6 +224,9 @@ struct hsr_node *hsr_get_node(struct hsr_port *port, struct list_head *node_db,
 	if (!skb_mac_header_was_set(skb))
 		return NULL;
 
+	if (skb->max_len < sizeof(struct ethhdr))
+		return NULL;
+
 	ethhdr = (struct ethhdr *)skb_mac_header(skb);
 
 	list_for_each_entry_rcu(node, node_db, mac_list) {
--

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ