diff options
| author | jooseong lee <jooseong.lee@samsung.com> | 2016-11-03 13:54:39 +0300 |
|---|---|---|
| committer | Casey Schaufler <casey@schaufler-ca.com> | 2016-11-05 03:42:57 +0300 |
| commit | 08382c9f6efe08b8bb30645c2744480cbd8f161a (patch) | |
| tree | 15701167ac2f631d8844a41fdfdf106f64bae122 /security/smack | |
| parent | 07d9a380680d1c0eb51ef87ff2eab5c994949e69 (diff) | |
| download | linux-08382c9f6efe08b8bb30645c2744480cbd8f161a.tar.xz | |
Smack: Assign smack_known_web label for kernel thread's
Assign smack_known_web label for kernel thread's socket
Creating struct sock by sk_alloc function in various kernel subsystems
like bluetooth doesn't call smack_socket_post_create(). In such case,
received sock label is the floor('_') label and makes access deny.
Signed-off-by: jooseong lee <jooseong.lee@samsung.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security/smack')
| -rw-r--r-- | security/smack/smack_lsm.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 1cb060293505..e73460d5acc6 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -2337,8 +2337,16 @@ static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags) if (ssp == NULL) return -ENOMEM; - ssp->smk_in = skp; - ssp->smk_out = skp; + /* + * Sockets created by kernel threads receive web label. + */ + if (unlikely(current->flags & PF_KTHREAD)) { + ssp->smk_in = &smack_known_web; + ssp->smk_out = &smack_known_web; + } else { + ssp->smk_in = skp; + ssp->smk_out = skp; + } ssp->smk_packet = NULL; sk->sk_security = ssp; |