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Message-ID: <CABXRUiSC+XHg4dSS_ribzENwceRHNS6jaTnq_Xs6F9byhhCukQ@mail.gmail.com>
Date: Thu, 18 Apr 2019 21:31:36 +0800
From: Fuqian Huang <huangfq.daxian@...il.com>
To: oss-security@...ts.openwall.com
Subject: Linux kernel < 4.14.111 drivers/media/dvb-frontends/helene.c kernel
address dumps to user space
In drivers/media/dvb-frontends/helene.c:1005,
function helene_attach_s will print the address of
adapter to dmesg, the kernel address is dumpped to
user space.
struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c)
{
...
priv->i2c = i2c;
...
dev_info(&priv->i2c->dev,
"Sony HELENE Sat attached on addr=%x at I2C adapter %p\n",
priv->i2c_address, priv->i2c);
return fe;
}
In drivers/media/dvb-frontends/helene.c:1041,
function helene_attach will print the address of
adapter to dmesg, the kernel address is dumpped to
user space.
struct dvb_frontend *helene_attach(struct dvb_frontend *fe,
const struct helene_config *config,
struct i2c_adapter *i2c)
{
...
priv->i2c = i2c;
...
dev_info(&priv->i2c->dev,
"Sony HELENE Ter attached on addr=%x at I2C adapter %p\n",
priv->i2c_address, priv->i2c);
return fe;
}
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