mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 10:29:37 +00:00
stm: Potential read overflow in stm_char_policy_set_ioctl()
The "size" variable comes from the user so we need to verify that it's
large enough to hold an stp_policy_id struct.
Fixes: 7bd1d4093c
("stm class: Introduce an abstraction for System Trace Module devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
This commit is contained in:
parent
5771a8c088
commit
71c488f32b
1 changed files with 1 additions and 1 deletions
|
@ -566,7 +566,7 @@ static int stm_char_policy_set_ioctl(struct stm_file *stmf, void __user *arg)
|
|||
if (copy_from_user(&size, arg, sizeof(size)))
|
||||
return -EFAULT;
|
||||
|
||||
if (size >= PATH_MAX + sizeof(*id))
|
||||
if (size < sizeof(*id) || size >= PATH_MAX + sizeof(*id))
|
||||
return -EINVAL;
|
||||
|
||||
/*
|
||||
|
|
Loading…
Reference in a new issue