Description: i2c: ismt: prevent memory corruption in ismt_access()
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2123309
Notes:
 carnil> Commit fixes 5e9a97b1f449 ("i2c: ismt: Adding support for
 carnil> I2C_SMBUS_BLOCK_PROC_CALL") in 5.11-rc1.
Bugs:
upstream: released (5.19-rc1) [690b2549b19563ec5ad53e5c82f6a944d910086e]
5.10-upstream-stable: N/A "Vulnerability introduced later"
4.19-upstream-stable: N/A "Vulnerability introduced later"
sid: released (5.18.2-1)
5.10-bullseye-security: N/A "Vulnerability introduced later"
4.19-buster-security: N/A "Vulnerability introduced later"