From: Oliver Neukum <oneukum@suse.com>
To: linux-usb@vger.kernel.org
Cc: Oliver Neukum <oneukum@suse.com>
Subject: [RFC 1/6] usb: usb_parse_endpoint ignore reserved bits
Date: Thu, 11 Apr 2024 14:42:59 +0200 [thread overview]
Message-ID: <20240411124722.17343-2-oneukum@suse.com> (raw)
In-Reply-To: <20240411124722.17343-1-oneukum@suse.com>
We have to ignore the higher bits in bEndpointAddress
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/usb/core/config.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 7f8d33f92ddb..c7056b123d46 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -279,11 +279,11 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
goto skip_to_next_endpoint_or_interface_descriptor;
}
- i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
- if (i >= 16 || i == 0) {
+ i = d->bEndpointAddress & 0x0f;
+ if (i == 0) {
dev_notice(ddev, "config %d interface %d altsetting %d has an "
- "invalid endpoint with address 0x%X, skipping\n",
- cfgno, inum, asnum, d->bEndpointAddress);
+ "invalid descriptor for the common control endpoint, skipping\n",
+ cfgno, inum, asnum);
goto skip_to_next_endpoint_or_interface_descriptor;
}
--
2.44.0
next prev parent reply other threads:[~2024-04-11 12:47 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-11 12:42 Hardening the parser during enumerations Oliver Neukum
2024-04-11 12:42 ` Oliver Neukum [this message]
2024-04-11 14:11 ` [RFC 1/6] usb: usb_parse_endpoint ignore reserved bits Greg KH
2024-04-11 14:27 ` Oliver Neukum
2024-04-11 14:58 ` Greg KH
2024-04-11 15:35 ` Alan Stern
2024-04-11 15:40 ` Oliver Neukum
2024-04-11 12:43 ` [RFC 2/6] usb: avoid overrunning a buffer in usb_parse_interface Oliver Neukum
2024-04-11 15:39 ` Alan Stern
2024-04-11 17:36 ` Alan Stern
2024-04-11 12:43 ` [RFC 3/6] usb: usb_parse_endpoint needs to guard against short descriptors Oliver Neukum
2024-04-11 15:57 ` Alan Stern
2024-04-11 12:43 ` [RFC 4/6] usb: usb_parse_endpoint guard against an incromprehensible preamble Oliver Neukum
2024-04-11 16:00 ` Alan Stern
2024-04-11 12:43 ` [RFC 5/6] usb: usb_parse_endpoint must not count duplicated endpoints Oliver Neukum
2024-04-11 16:04 ` Alan Stern
2024-04-11 12:43 ` [RFC 6/6] usb: config: find_next_descriptor can overflow buffer Oliver Neukum
2024-04-11 16:16 ` Alan Stern
2024-04-11 14:09 ` Hardening the parser during enumerations Greg KH
2024-04-11 15:37 ` Oliver Neukum
2024-04-12 7:54 ` Greg KH
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240411124722.17343-2-oneukum@suse.com \
--to=oneukum@suse.com \
--cc=linux-usb@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox