AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

i2o: check copy_from_user() size parameter

Browse Source 
Limit the size of the copy so we don't corrupt memory.  Hopefully this
can only be called by root, but fixing this makes the static checkers
happier.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Masanari Iida <standby24x7@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dan Carpenter 2013-04-30 15:27:47 -07:00 committed by Linus Torvalds
parent 79bae42d51
commit 9151b3982d
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/message/i2o/i2o_config.c
View File

@ -687,6 +687,11 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
}
size = size >> 16;
size *= 4;
if (size > sizeof(rmsg)) {
rcode = -EINVAL;
goto sg_list_cleanup;
}
/* Copy in the user's I2O command */
if (copy_from_user(rmsg, user_msg, size)) {
rcode = -EFAULT;
@ -922,6 +927,11 @@ static int i2o_cfg_passthru(unsigned long arg)
}
size = size >> 16;
size *= 4;
if (size > sizeof(rmsg)) {
rcode = -EFAULT;
goto sg_list_cleanup;
}
/* Copy in the user's I2O command */
if (copy_from_user(rmsg, user_msg, size)) {
rcode = -EFAULT;