This is a note to let you know that I've just added the patch titled
apparmor: fix invalid reference on profile->disconnected
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
apparmor-fix-invalid-reference-on-profile-disconnect.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit efb80d19b0f790594ff9a804eab6e74c2f8f98e6
Author: Georgia Garcia <georgia.garcia@xxxxxxxxxxxxx>
Date: Mon Aug 21 15:37:24 2023 -0300
apparmor: fix invalid reference on profile->disconnected
[ Upstream commit 8884ba07786c718771cf7b78cb3024924b27ec2b ]
profile->disconnected was storing an invalid reference to the
disconnected path. Fix it by duplicating the string using
aa_unpack_strdup and freeing accordingly.
Fixes: 72c8a768641d ("apparmor: allow profiles to provide info to disconnected paths")
Signed-off-by: Georgia Garcia <georgia.garcia@xxxxxxxxxxxxx>
Signed-off-by: John Johansen <john.johansen@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c
index b38f7b2a5e1d5..ec695a6caac7d 100644
--- a/security/apparmor/policy.c
+++ b/security/apparmor/policy.c
@@ -255,6 +255,7 @@ void aa_free_profile(struct aa_profile *profile)
aa_put_ns(profile->ns);
kfree_sensitive(profile->rename);
+ kfree_sensitive(profile->disconnected);
free_attachment(&profile->attach);
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index 694fb7a099624..74bcd0d79fb33 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -804,7 +804,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
const char *info = "failed to unpack profile";
size_t ns_len;
struct rhashtable_params params = { 0 };
- char *key = NULL;
+ char *key = NULL, *disconnected = NULL;
struct aa_data *data;
int error = -EPROTO;
kernel_cap_t tmpcap;
@@ -870,7 +870,8 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
}
/* disconnected attachment string is optional */
- (void) aa_unpack_str(e, &profile->disconnected, "disconnected");
+ (void) aa_unpack_strdup(e, &disconnected, "disconnected");
+ profile->disconnected = disconnected;
/* per profile debug flags (complain, audit) */
if (!aa_unpack_nameX(e, AA_STRUCT, "flags")) {
