From: Pan Bian <bianpan2016@163.com>
To: Allison Randal <allison@lohutok.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Richard Fontana <rfontana@redhat.com>,
Kate Stewart <kstewart@linuxfoundation.org>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Pan Bian <bianpan2016@163.com>
Subject: [PATCH] NFC: fdp: fix incorrect free object
Date: Tue, 5 Nov 2019 16:34:07 +0800 [thread overview]
Message-ID: <1572942847-35209-1-git-send-email-bianpan2016@163.com> (raw)
The address of fw_vsc_cfg is on stack. Releasing it with devm_kfree() is
incorrect, which may result in a system crash or other security impacts.
The expected object to free is *fw_vsc_cfg.
Signed-off-by: Pan Bian <bianpan2016@163.com>
---
drivers/nfc/fdp/i2c.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c
index 1cd113c8d7cb..ad0abb1f0bae 100644
--- a/drivers/nfc/fdp/i2c.c
+++ b/drivers/nfc/fdp/i2c.c
@@ -259,7 +259,7 @@ static void fdp_nci_i2c_read_device_properties(struct device *dev,
*fw_vsc_cfg, len);
if (r) {
- devm_kfree(dev, fw_vsc_cfg);
+ devm_kfree(dev, *fw_vsc_cfg);
goto vsc_read_err;
}
} else {
--
2.7.4
next reply other threads:[~2019-11-05 8:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-05 8:34 Pan Bian [this message]
2019-11-06 2:32 ` David Miller
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