On Thu, Jul 29, 2021 at 04:35:32PM +0200, Greg Kroah-Hartman wrote:
If an i2c driver happens to not provide the full amount of data that a user asks for, it is possible that some uninitialized data could be sent to userspace. While all in-kernel drivers look to be safe, just be sure by initializing the buffer to zero before it is passed to the i2c driver so that any future drivers will not have this issue.
Also properly copy the amount of data recvieved to the userspace buffer, as pointed out by Dan Carpenter.
Reported-by: Eric Dumazet edumazet@google.com Cc: Dan Carpenter dan.carpenter@oracle.com Cc: stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
Fixed checkpatch warning "WARNING: Invalid email format for stable: 'stable stable@vger.kernel.org', prefer 'stable@vger.kernel.org' " and applied to for-current, thanks!