From: Moksh Panicker <mokshpanicker.7@gmail.com>
To: linux-media@vger.kernel.org
Cc: mchehab@kernel.org, Moksh Panicker <mokshpanicker.7@gmail.com>
Subject: [PATCH] media: mxl111sf: fix null pointer dereference in mxl111sf_ctrl_msg
Date: Sun, 10 May 2026 16:24:35 +0000 [thread overview]
Message-ID: <20260510162435.67048-1-mokshpanicker.7@gmail.com> (raw)
Signed-off-by: Moksh Panicker <mokshpanicker.7@gmail.com>
---
drivers/media/usb/dvb-usb-v2/mxl111sf.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf.c b/drivers/media/usb/dvb-usb-v2/mxl111sf.c
index 870ac3c8b085..9908675c355e 100644
--- a/drivers/media/usb/dvb-usb-v2/mxl111sf.c
+++ b/drivers/media/usb/dvb-usb-v2/mxl111sf.c
@@ -56,6 +56,9 @@ int mxl111sf_ctrl_msg(struct mxl111sf_state *state,
int wo = (rbuf == NULL || rlen == 0); /* write-only */
int ret;
+ if (!d)
+ return -ENODEV;
+
if (1 + wlen > MXL_MAX_XFER_SIZE) {
pr_warn("%s: len=%d is too big!\n", __func__, wlen);
return -EOPNOTSUPP;
--
2.34.1
next reply other threads:[~2026-05-10 16:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-10 16:24 Moksh Panicker [this message]
2026-05-10 16:29 ` [PATCH v2] media: mxl111sf: fix null pointer dereference in mxl111sf_ctrl_msg Moksh Panicker
2026-05-10 16:29 ` syzbot
2026-05-10 17:24 ` [PATCH v3] " Moksh Panicker
2026-05-11 10:13 ` [PATCH v4] " Moksh Panicker
-- strict thread matches above, loose matches on Subject: below --
2026-05-14 0:01 [PATCH] " Moksh Panicker
2026-05-13 23:57 Moksh Panicker
2026-05-13 23:55 Moksh Panicker
2026-05-10 16:26 Moksh Panicker
2026-05-10 16:26 ` syzbot
2026-05-10 7:24 Moksh Panicker
2026-05-10 7:24 ` syzbot
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