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Message-Id: <20260209-upstream-20260219-v1-1-2b4d74e309d1@gmail.com>
Date: Mon, 09 Feb 2026 11:37:02 +0800
From: Yasin Lee <yasin.lee.x@...il.com>
To: Jonathan Cameron <jic23@...nel.org>,
David Lechner <dlechner@...libre.com>,
Nuno Sá <nuno.sa@...log.com>,
Andy Shevchenko <andy@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, yasin.lee.x@...look.com
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, Yasin Lee <yasin.lee.x@...il.com>
Subject: [PATCH 1/5] iio: proximity: hx9023s: fix out-of-bounds access when
copying firmware
Initialize fw_size before copying firmware data into the flexible
array member to match the __counted_by() annotation. This fixes a
potential out-of-bounds access that could lead to a kernel crash.
Signed-off-by: Yasin Lee <yasin.lee.x@...il.com>
---
drivers/iio/proximity/hx9023s.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023s.c
index 2918dfc0df54..ad839db6b326 100644
--- a/drivers/iio/proximity/hx9023s.c
+++ b/drivers/iio/proximity/hx9023s.c
@@ -1034,9 +1034,8 @@ static int hx9023s_send_cfg(const struct firmware *fw, struct hx9023s_data *data
if (!bin)
return -ENOMEM;
- memcpy(bin->data, fw->data, fw->size);
-
bin->fw_size = fw->size;
+ memcpy(bin->data, fw->data, bin->fw_size);
bin->fw_ver = bin->data[FW_VER_OFFSET];
bin->reg_count = get_unaligned_le16(bin->data + FW_REG_CNT_OFFSET);
--
2.43.0
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