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authorTomas Bortoli <tomasbortoli@gmail.com>2019-05-28 16:42:58 +0300
committerMarcel Holtmann <marcel@holtmann.org>2019-07-06 14:02:38 +0300
commit4ce9146e0370fcd573f0372d9b4e5a211112567c (patch)
treefad9d7e56c2f80cf1fd74eeff93c7f2ad20f8be8 /drivers/bluetooth
parent6c595ea8b7b9d4048760c28cbccd8956acbc0762 (diff)
downloadlinux-4ce9146e0370fcd573f0372d9b4e5a211112567c.tar.xz
Bluetooth: hci_bcsp: Fix memory leak in rx_skb
Syzkaller found that it is possible to provoke a memory leak by never freeing rx_skb in struct bcsp_struct. Fix by freeing in bcsp_close() Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com> Reported-by: syzbot+98162c885993b72f19c4@syzkaller.appspotmail.com Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/hci_bcsp.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index 82b13faa9422..fe2e307009f4 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -744,6 +744,11 @@ static int bcsp_close(struct hci_uart *hu)
skb_queue_purge(&bcsp->rel);
skb_queue_purge(&bcsp->unrel);
+ if (bcsp->rx_skb) {
+ kfree_skb(bcsp->rx_skb);
+ bcsp->rx_skb = NULL;
+ }
+
kfree(bcsp);
return 0;
}