From: Alan Stern <stern@rowland.harvard.edu>
To: syzbot <syzbot+8258d5439c49d4c35f43@syzkaller.appspotmail.com>
Cc: Benjamin Tissoires <bentiss@kernel.org>,
Jiri Kosina <jikos@kernel.org>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [usb?] KASAN: slab-out-of-bounds Read in mon_copy_to_buff
Date: Wed, 9 Jul 2025 13:52:58 -0400 [thread overview]
Message-ID: <681c4eac-e812-4022-96e8-cd6cada73910@rowland.harvard.edu> (raw)
In-Reply-To: <5644bdbc-8449-407c-8e0c-e725e10a40f1@rowland.harvard.edu>
Test patch to see the contents of the report descriptor.
Alan Stern
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ d7b8f8e20813
Index: usb-devel/drivers/hid/usbhid/hid-core.c
===================================================================
--- usb-devel.orig/drivers/hid/usbhid/hid-core.c
+++ usb-devel/drivers/hid/usbhid/hid-core.c
@@ -1043,6 +1043,10 @@ static int usbhid_parse(struct hid_devic
goto err;
}
+ dev_info(&intf->dev, "Report descriptor:\n");
+ print_hex_dump(KERN_INFO, " * ", DUMP_PREFIX_NONE, 16, 1,
+ rdesc, rsize, false);
+
ret = hid_parse_report(hid, rdesc, rsize);
kfree(rdesc);
if (ret) {
next prev parent reply other threads:[~2025-07-09 17:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-07 11:40 [syzbot] [usb?] KASAN: slab-out-of-bounds Read in mon_copy_to_buff syzbot
2025-07-07 15:05 ` syzbot
2025-07-07 18:09 ` Alan Stern
2025-07-07 18:41 ` syzbot
2025-07-07 19:18 ` Alan Stern
2025-07-07 19:48 ` syzbot
2025-07-09 15:28 ` Alan Stern
2025-07-09 15:56 ` syzbot
2025-07-09 17:52 ` Alan Stern [this message]
2025-07-09 18:29 ` syzbot
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