From: Danila Chernetsov listdansp@mail.ru
[ Upstream commit 000518bc5aef25d3f703592a0296d578c98b1517 ]
rhashtable_insert_fast() could return err value when memory allocation is failed. but unpack_profile() do not check values and this always returns success value. This patch just adds error check code.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: e025be0f26d5 ("apparmor: support querying extended trusted helper extra data")
Signed-off-by: Danila Chernetsov listdansp@mail.ru Signed-off-by: John Johansen john.johansen@canonical.com Signed-off-by: Sasha Levin sashal@kernel.org --- security/apparmor/policy_unpack.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index d5b3a062d1d18..5f758b289ace3 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -909,8 +909,13 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name) goto fail; }
- rhashtable_insert_fast(profile->data, &data->head, - profile->data->p); + if (rhashtable_insert_fast(profile->data, &data->head, + profile->data->p)) { + kfree_sensitive(data->key); + kfree_sensitive(data); + info = "failed to insert data to table"; + goto fail; + } }
if (!unpack_nameX(e, AA_STRUCTEND, NULL)) {