From e9fbb7c2f65e900fc6505274f70cd9db3c876667 Mon Sep 17 00:00:00 2001 From: Danila Chernetsov Date: Tue, 4 Apr 2023 19:05:49 +0000 Subject: apparmor: fix missing error check for rhashtable_insert_fast [ 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 Signed-off-by: John Johansen Signed-off-by: Sasha Levin --- security/apparmor/policy_unpack.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'security') diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index 9d26bbb90133..9c3fec2c7cf6 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -917,8 +917,13 @@ 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)) { -- cgit v1.2.3