1bf4470a3939c678fb822073e9ea77a0560bc6bb - pub/scm/linux/kernel/git/bluetooth/bluetooth

commit	1bf4470a3939c678fb822073e9ea77a0560bc6bb	[log] [tgz]
author	Luiz Augusto von Dentz <luiz.von.dentz@intel.com>	Tue Oct 22 12:31:08 2024 -0400
committer	Luiz Augusto von Dentz <luiz.von.dentz@intel.com>	Wed Oct 23 10:20:29 2024 -0400
tree	4e3b5bfbbaf5f90fa8cc5bfed68e30405229f41e
parent	989fa5171f005ecf63440057218d8aeb1795287d [diff]

Bluetooth: SCO: Fix UAF on sco_sock_timeout

conn->sk maybe have been unlinked/freed while waiting for sco_conn_lock
so this checks if the conn->sk is still valid by checking if it part of
sco_sk_list.

Reported-by: syzbot+4c0d0c4cde787116d465@syzkaller.appspotmail.com
Tested-by: syzbot+4c0d0c4cde787116d465@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=4c0d0c4cde787116d465
Fixes: ba316be1b6a0 ("Bluetooth: schedule SCO timeouts with delayed_work")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

include/net/bluetooth/bluetooth.h[diff]
net/bluetooth/af_bluetooth.c[diff]
net/bluetooth/sco.c[diff]

3 files changed

tree: 4e3b5bfbbaf5f90fa8cc5bfed68e30405229f41e