From: Jeffin Philip <jeffinphilip14@gmail.com>
To: gregkh@linuxfoundation.org
Cc: xu.yang_2@nxp.com, Frank.Li@nxp.com,
panjunzhong@linux.spacemit.com, kees@kernel.org,
jeffinphilip14@gmail.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org,
syzbot+8dcac923582c28505fd7@syzkaller.appspotmail.com
Subject: [PATCH] Fix Null Pointer Dereference in uvcg_video_init()
Date: Thu, 30 Jul 2026 11:27:05 +0530 [thread overview]
Message-ID: <20260730055705.13784-1-jeffinphilip14@gmail.com> (raw)
uvcg_video_init references video->uvc before assigning it
leading to a null pointer dereference. Fix this by assigning
video->uvc first and then dereferencing it later.
Reported-by: syzbot+8dcac923582c28505fd7@syzkaller.appspotmail.com
Fixes: https://syzkaller.appspot.com/bug?extid=8dcac923582c28505fd7
Signed-off-by: Jeffin Philip <jeffinphilip14@gmail.com>
---
drivers/usb/gadget/function/uvc_video.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c
index 2f9700b3f1b6..cb532654b9b8 100644
--- a/drivers/usb/gadget/function/uvc_video.c
+++ b/drivers/usb/gadget/function/uvc_video.c
@@ -806,6 +806,7 @@ int uvcg_video_enable(struct uvc_video *video)
*/
int uvcg_video_init(struct uvc_video *video, struct uvc_device *uvc)
{
+ video->uvc = uvc;
video->is_enabled = false;
INIT_LIST_HEAD(&video->ureqs);
INIT_LIST_HEAD(&video->req_free);
@@ -829,7 +830,6 @@ int uvcg_video_init(struct uvc_video *video, struct uvc_device *uvc)
sched_set_fifo(video->kworker->task);
- video->uvc = uvc;
video->fcc = V4L2_PIX_FMT_YUYV;
video->bpp = 16;
video->width = 320;
--
2.55.0
next reply other threads:[~2026-07-30 5:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-30 5:57 Jeffin Philip [this message]
2026-07-30 6:16 ` [PATCH] Fix Null Pointer Dereference in uvcg_video_init() Greg KH
2026-07-30 6:40 ` Xu Yang
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=20260730055705.13784-1-jeffinphilip14@gmail.com \
--to=jeffinphilip14@gmail.com \
--cc=Frank.Li@nxp.com \
--cc=gregkh@linuxfoundation.org \
--cc=kees@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=panjunzhong@linux.spacemit.com \
--cc=syzbot+8dcac923582c28505fd7@syzkaller.appspotmail.com \
--cc=xu.yang_2@nxp.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.