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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2020-01-15 20:49:04 +0300 |
|---|---|---|
| committer |   Johan Hedberg <johan.hedberg@intel.com> | 2020-01-26 10:34:17 +0200 |
| commit | 11eb85ec42dc8c7a7ec519b90ccf2eeae9409de8 (patch) | |
| tree | a88ca07a4de1b08600afabe48fb8b92b15b5cc28 /include/net/bluetooth/hci.h | |
| parent | Bluetooth: Move {min,max}_key_size debugfs into hci_debugfs_create_le (diff) | |
| download | linux-dev-11eb85ec42dc8c7a7ec519b90ccf2eeae9409de8.tar.xz linux-dev-11eb85ec42dc8c7a7ec519b90ccf2eeae9409de8.zip | |
Bluetooth: Fix race condition in hci_release_sock()
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>
Diffstat (limited to 'include/net/bluetooth/hci.h')
0 files changed, 0 insertions, 0 deletions