diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-01-15 20:49:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-05 14:18:16 +0000 |
| commit | 58e957b9c7c22e89188558c27437b6e9a2ddae3d (patch) | |
| tree | a69d4f80452f78d1529a85853432b848586cbc2f /kernel | |
| parent | ab84fd0d3dc83277d6ab7246a6b2cd45ba924367 (diff) | |
Bluetooth: Fix race condition in hci_release_sock()
commit 11eb85ec42dc8c7a7ec519b90ccf2eeae9409de8 upstream.
Syzbot managed to trigger a use after free "KASAN: use-after-free Write
in hci_sock_bind". I have reviewed the code manually and one possibly
cause I have found is that we are not holding lock_sock(sk) when we do
the hci_dev_put(hdev) in hci_sock_release(). My theory is that the bind
and the release are racing against each other which results in this use
after free.
Reported-by: syzbot+eba992608adf3d796bcc@syzkaller.appspotmail.com
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions