linux-kernel - [PATCH] crypto: qat - (qat_420xx) fix off by one in uof_get

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Message-ID: <796ecd7c-54ad-4bec-b748-3e156cc0a1aa@stanley.mountain>
Date: Sat, 28 Sep 2024 13:05:01 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Jie Wang <jie.wang@...el.com>
Cc: Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Damian Muszynski <damian.muszynski@...el.com>,
	Tero Kristo <tero.kristo@...ux.intel.com>,
	Shashank Gupta <shashank.gupta@...el.com>,
	Lucas Segarra Fernandez <lucas.segarra.fernandez@...el.com>,
	Dong Xie <dong.xie@...el.com>, qat-linux@...el.com,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH] crypto: qat - (qat_420xx) fix off by one in uof_get_name()

This is called from uof_get_name_420xx() where "num_objs" is the
ARRAY_SIZE() of fw_objs[].  The > needs to be >= to prevent an out of
bounds access.

Fixes: fcf60f4bcf54 ("crypto: qat - add support for 420xx devices")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c b/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c
index 78f0ea49254d..9faef33e54bd 100644
--- a/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c
+++ b/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c
@@ -375,7 +375,7 @@ static const char *uof_get_name(struct adf_accel_dev *accel_dev, u32 obj_num,
 	else
 		id = -EINVAL;
 
-	if (id < 0 || id > num_objs)
+	if (id < 0 || id >= num_objs)
 		return NULL;
 
 	return fw_objs[id];
-- 
2.45.2