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Wed, 29 Jul 2026 22:57:23 -0700 (PDT) Received: from Default ([2409:40f4:1008:1710:a945:87ad:2d3e:163d]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-31504d373c3sm16792167eec.23.2026.07.29.22.57.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jul 2026 22:57:22 -0700 (PDT) From: Jeffin Philip 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 Message-ID: <20260730055705.13784-1-jeffinphilip14@gmail.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- 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