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Check the validity of the PCI device string in AMD ADL I2C driver to prevent crash if the string is malformed

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This commit is contained in:
Adam Honse 2021-01-28 18:03:52 -06:00
parent f977598392
commit 4fa5b413ee
1 changed files with 16 additions and 13 deletions
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3
i2c_smbus/i2c_smbus_amdadl.cpp
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@ -84,6 +84,8 @@ i2c_smbus_amdadl::i2c_smbus_amdadl(ADL_CONTEXT_HANDLE context)
std::size_t dev_loc = pnp_str.find("DEV_");
std::size_t sub_loc = pnp_str.find("SUBSYS_");
if((ven_loc != std::string::npos) && (dev_loc != std::string::npos) && (sub_loc != std::string::npos))
{
std::string ven_str = pnp_str.substr(ven_loc + 4, 4);
std::string dev_str = pnp_str.substr(dev_loc + 4, 4);
std::string sbv_str = pnp_str.substr(sub_loc + 11, 4);
@ -101,6 +103,7 @@ i2c_smbus_amdadl::i2c_smbus_amdadl(ADL_CONTEXT_HANDLE context)
strcpy(this->device_name, "AMD ADL");
}
}
}
s32 i2c_smbus_amdadl::i2c_smbus_xfer(u8 addr, char read_write, u8 command, int size, i2c_smbus_data* data)
{