CVE-2017-18551

An out of bounds (OOB) memory access flaw was found in i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c in I2C subsystem. A read request for length (data->block[0]) greater than ‘I2C_SMBUS_BLOCK_MAX + 1’ may cause underlying I2C driver write out of array’s boundary. This could allow a local attacker with special user privilege (or root) to crash the system or leak kernel internal information.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.