Description: i2c: core-smbus: prevent stack corruption on read I2C_BLOCK_DATA
References:
 https://source.android.com/security/bulletin/pixel/2019-09-01
Notes:
 carnil> Likely just a duplicate of CVE-2017-18551, asked Android
 carnil> security team to confirm.
Bugs:
upstream: released (4.15-rc9) [89c6efa61f5709327ecfa24bff18e57a4e80c7fa]
4.19-upstream-stable: N/A "Fixed before branching point"
4.9-upstream-stable: released (4.9.168) [2555029ac9d474d3dc1b66ff48b1c773e8446af5]
3.16-upstream-stable: released (3.16.55) [4a6efb0107eb5cb91dc19efc0a518ee12793190e]
sid: released (4.14.17-1)
4.19-buster-security: N/A "Fixed before branching point"
4.9-stretch-security: released (4.9.168-1)
3.16-jessie-security: released (3.16.56-1)