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| author | Casey Schaufler <casey@schaufler-ca.com> | 2017-05-31 17:53:42 +0200 |
|---|---|---|
| committer | Casey Schaufler <casey@schaufler-ca.com> | 2017-06-01 18:27:12 +0200 |
| commit | 51d59af26fe81967e0d7ec92bd9381d3b26434f3 (patch) | |
| tree | d43e2610710a1f4c82283120df19fe593ed77de0 | |
| parent | smack: use pernet operations for hook registration (diff) | |
| download | linux-51d59af26fe81967e0d7ec92bd9381d3b26434f3.tar.xz linux-51d59af26fe81967e0d7ec92bd9381d3b26434f3.zip | |
Smack: Safer check for a socket in file_receive
The check of S_ISSOCK() in smack_file_receive() is not
appropriate if the passed descriptor is a socket.
Reported-by: Stephen Smalley <sds@tyco.nsa.gov>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
| -rw-r--r-- | security/smack/smack_lsm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 658f5d8c7e76..463af86812c7 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -1915,7 +1915,7 @@ static int smack_file_receive(struct file *file) smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH); smk_ad_setfield_u_fs_path(&ad, file->f_path); - if (S_ISSOCK(inode->i_mode)) { + if (inode->i_sb->s_magic == SOCKFS_MAGIC) { sock = SOCKET_I(inode); ssp = sock->sk->sk_security; tsp = current_security(); |