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authorJohn Johansen <john.johansen@canonical.com>2010-08-27 18:33:28 -0700
committerJames Morris <jmorris@namei.org>2010-09-08 09:19:31 +1000
commit04ccd53f09741c4bc54ab36db000bc1383e4812e (patch)
treed8c6e27094cb3b042e852f01c09a3d21979150d2 /security/apparmor
parent3a2dc8382a3e85a51ed9c6f57ea80665ea7a0c95 (diff)
downloadlinux-04ccd53f09741c4bc54ab36db000bc1383e4812e.tar.gz
AppArmor: Fix splitting an fqname into separate namespace and profile names
As per Dan Carpenter <error27@gmail.com> If we have a ns name without a following profile then in the original code it did "*ns_name = &name[1];". "name" is NULL so "*ns_name" is 0x1. That isn't useful and could cause an oops when this function is called from aa_remove_profiles(). Beyond this the assignment of the namespace name was wrong in the case where the profile name was provided as it was being set to &name[1] after name = skip_spaces(split + 1); Move the ns_name assignment before updating name for the split and also add skip_spaces, making the interface more robust. Signed-off-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/apparmor')
-rw-r--r--security/apparmor/lib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/security/apparmor/lib.c b/security/apparmor/lib.c
index 6e85cdb4303f..506d2baf6147 100644
--- a/security/apparmor/lib.c
+++ b/security/apparmor/lib.c
@@ -40,6 +40,7 @@ char *aa_split_fqname(char *fqname, char **ns_name)
*ns_name = NULL;
if (name[0] == ':') {
char *split = strchr(&name[1], ':');
+ *ns_name = skip_spaces(&name[1]);
if (split) {
/* overwrite ':' with \0 */
*split = 0;
@@ -47,7 +48,6 @@ char *aa_split_fqname(char *fqname, char **ns_name)
} else
/* a ns name without a following profile is allowed */
name = NULL;
- *ns_name = &name[1];
}
if (name && *name == 0)
name = NULL;