From: syzbot <syzbot+79340d79a8ed013a2313@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [syzbot] Re: [syzbot] [can?] [usb?] KASAN: slab-out-of-bounds Read in ucan_probe
Date: Wed, 26 Mar 2025 18:28:20 -0700 [thread overview]
Message-ID: <67e4a9b4.050a0220.2f068f.0018.GAE@google.com> (raw)
In-Reply-To: <67e46af0.050a0220.2f068f.000e.GAE@google.com>
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Subject: Re: [syzbot] [can?] [usb?] KASAN: slab-out-of-bounds Read in ucan_probe
Author: lizhi.xu@windriver.com
#syz test
diff --git a/drivers/net/can/usb/ucan.c b/drivers/net/can/usb/ucan.c
index 39a63b731..97c6cfa2d 100644
--- a/drivers/net/can/usb/ucan.c
+++ b/drivers/net/can/usb/ucan.c
@@ -1399,7 +1399,7 @@ static int ucan_probe(struct usb_interface *intf,
/* Prepare Memory for control transfers */
ctl_msg_buffer = devm_kzalloc(&udev->dev,
- sizeof(union ucan_ctl_payload),
+ sizeof(union ucan_ctl_payload) + 1,
GFP_KERNEL);
if (!ctl_msg_buffer) {
dev_err(&udev->dev,
next prev parent reply other threads:[~2025-03-27 1:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-26 21:00 [syzbot] [can?] [usb?] KASAN: slab-out-of-bounds Read in ucan_probe syzbot
2025-03-27 1:28 ` syzbot [this message]
2025-03-27 5:33 ` Vincent Mailhol
2025-03-27 6:43 ` [PATCH] can: ucan: the memory allocated to ctl_msg_buffer is one byte less Lizhi Xu
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