From: Pavel Skripkin <paskripkin@gmail.com>
To: paul@paul-moore.com, davem@davemloft.net,
yoshfuji@linux-ipv6.org, dsahern@kernel.org, kuba@kernel.org
Cc: netdev@vger.kernel.org, linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org,
Pavel Skripkin <paskripkin@gmail.com>
Subject: [PATCH 2/2] net: cipso: fix memory leak in cipso_v4_doi_free
Date: Sat, 10 Jul 2021 10:03:23 +0300 [thread overview]
Message-ID: <cec894625531da243df3a9f05466b83e107e50d7.1625900431.git.paskripkin@gmail.com> (raw)
In-Reply-To: <cover.1625900431.git.paskripkin@gmail.com>
When doi_def->type == CIPSO_V4_MAP_TRANS doi_def->map.std should
be freed to avoid memory leak.
Fail log:
BUG: memory leak
unreferenced object 0xffff88801b936d00 (size 64):
comm "a.out", pid 8478, jiffies 4295042353 (age 15.260s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 15 b8 12 26 00 00 00 00 00 00 00 00 .......&........
backtrace:
netlbl_cipsov4_add (net/netlabel/netlabel_cipso_v4.c:145 net/netlabel/netlabel_cipso_v4.c:416)
genl_family_rcv_msg_doit (net/netlink/genetlink.c:741)
genl_rcv_msg (net/netlink/genetlink.c:783 net/netlink/genetlink.c:800)
netlink_rcv_skb (net/netlink/af_netlink.c:2505)
genl_rcv (net/netlink/genetlink.c:813)
Fixes: b1edeb102397 ("netlabel: Replace protocol/NetLabel linking with refrerence
counts")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
---
net/ipv4/cipso_ipv4.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index bfaf327e9d12..e0480c6cebaa 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -472,6 +472,7 @@ void cipso_v4_doi_free(struct cipso_v4_doi *doi_def)
kfree(doi_def->map.std->lvl.local);
kfree(doi_def->map.std->cat.cipso);
kfree(doi_def->map.std->cat.local);
+ kfree(doi_def->map.std);
break;
}
kfree(doi_def);
--
2.32.0
next prev parent reply other threads:[~2021-07-10 7:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-10 7:03 [PATCH 0/2] net: cipso: bug fixes Pavel Skripkin
2021-07-10 7:03 ` [PATCH 1/2] net: cipso: fix warnings in netlbl_cipsov4_add_std Pavel Skripkin
2021-07-12 15:03 ` Paul Moore
2021-07-26 11:11 ` Pavel Skripkin
2021-07-27 2:40 ` Paul Moore
2021-07-10 7:03 ` Pavel Skripkin [this message]
2021-07-10 7:29 ` [PATCH 2/2] net: cipso: fix memory leak in cipso_v4_doi_free Dongliang Mu
2021-07-10 7:40 ` Pavel Skripkin
2021-07-10 7:42 ` Dongliang Mu
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