diff options
| -rw-r--r-- | security/smack/smackfs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c index 3a75d2a8f517..9d853c0e55b8 100644 --- a/security/smack/smackfs.c +++ b/security/smack/smackfs.c @@ -831,6 +831,7 @@ static int smk_open_cipso(struct inode *inode, struct file *file) static ssize_t smk_set_cipso(struct file *file, const char __user *buf, size_t count, loff_t *ppos, int format) { + struct netlbl_lsm_catmap *old_cat; struct smack_known *skp; struct netlbl_lsm_secattr ncats; char mapcatset[SMK_CIPSOLEN]; @@ -920,9 +921,11 @@ static ssize_t smk_set_cipso(struct file *file, const char __user *buf, rc = smk_netlbl_mls(maplevel, mapcatset, &ncats, SMK_CIPSOLEN); if (rc >= 0) { - netlbl_catmap_free(skp->smk_netlabel.attr.mls.cat); + old_cat = skp->smk_netlabel.attr.mls.cat; skp->smk_netlabel.attr.mls.cat = ncats.attr.mls.cat; skp->smk_netlabel.attr.mls.lvl = ncats.attr.mls.lvl; + synchronize_rcu(); + netlbl_catmap_free(old_cat); rc = count; /* * This mapping may have been cached, so clear the cache. |