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apparmor: use kvfree_sensitive to free data->data

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commit 2bc73505a5 upstream.

Inside unpack_profile() data->data is allocated using kvmemdup() so it
should be freed with the corresponding kvfree_sensitive().

Also add missing data->data release for rhashtable insertion failure path
in unpack_profile().

Found by Linux Verification Center (linuxtesting.org).

Fixes: e025be0f26 ("apparmor: support querying extended trusted helper extra data")
Cc: stable@vger.kernel.org
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fedor Pchelkin 2024-02-01 17:24:48 +03:00 committed by Greg Kroah-Hartman
parent 94aeee7c21
commit 4224da5120
2 changed files with 2 additions and 1 deletions
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2
security/apparmor/policy.c
View File

@ -187,7 +187,7 @@ static void aa_free_data(void *ptr, void *arg)
{
struct aa_data *data = ptr;
kfree_sensitive(data->data);
kvfree_sensitive(data->data, data->size);
kfree_sensitive(data->key);
kfree_sensitive(data);
}

1
security/apparmor/policy_unpack.c
View File

@ -915,6 +915,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
if (rhashtable_insert_fast(profile->data, &data->head,
profile->data->p)) {
kvfree_sensitive(data->data, data->size);
kfree_sensitive(data->key);
kfree_sensitive(data);
info = "failed to insert data to table";