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PCI: Check dynids driver_data value for validity

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Only accept dynids whose driver_data value matches one of the driver's
pci_driver_id entries. This prevents the user from accidentally passing
values the drivers do not expect.

Cc: Milton Miller <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Jean Delvare <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
This commit is contained in:
Jean Delvare 2008-08-17 21:06:59 +02:00 • committed by Jesse Barnes
commit b41d6cf38e
4 changed files with 20 additions and 10 deletions
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4
drivers/i2c/busses/i2c-amd756.c
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@ -332,10 +332,6 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
int error;
u8 temp;
/* driver_data might come from user-space, so check it */
if (id->driver_data >= ARRAY_SIZE(chipname))
return -EINVAL;
if (amd756_ioport) {
dev_err(&pdev->dev, "Only one device supported "
"(you have a strange motherboard, btw)\n");

4
drivers/i2c/busses/i2c-viapro.c
View file

@ -332,10 +332,6 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
unsigned char temp;
int error = -ENODEV;
/* driver_data might come from user-space, so check it */
if (id->driver_data & 1 || id->driver_data > 0xff)
return -EINVAL;
/* Determine the address of the SMBus areas */
if (force_addr) {
vt596_smba = force_addr & 0xfff0;