diff options
Diffstat (limited to 'security/apparmor')
| -rw-r--r-- | security/apparmor/.gitignore | 1 | ||||
| -rw-r--r-- | security/apparmor/apparmorfs.c | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/security/apparmor/.gitignore b/security/apparmor/.gitignore index 0a0a99f3b08..4d995aeaebc 100644 --- a/security/apparmor/.gitignore +++ b/security/apparmor/.gitignore @@ -3,3 +3,4 @@ # af_names.h capability_names.h +rlim_names.h diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c index a27086d16f0..0848292982a 100644 --- a/security/apparmor/apparmorfs.c +++ b/security/apparmor/apparmorfs.c @@ -29,7 +29,7 @@ * aa_simple_write_to_buffer - common routine for getting policy from user * @op: operation doing the user buffer copy * @userbuf: user buffer to copy data from (NOT NULL) - * @alloc_size: size of user buffer + * @alloc_size: size of user buffer (REQUIRES: @alloc_size >= @copy_size) * @copy_size: size of data to copy from user buffer * @pos: position write is at in the file (NOT NULL) * @@ -42,6 +42,8 @@ static char *aa_simple_write_to_buffer(int op, const char __user *userbuf, { char *data; + BUG_ON(copy_size > alloc_size); + if (*pos != 0) /* only writes from pos 0, that is complete writes */ return ERR_PTR(-ESPIPE); |