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| author | Hillf Danton <hdanton@sina.com> | 2020-02-05 10:31:59 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 13:14:32 +0200 |
| commit | 4b0795d5b615de48541eae1a87b5a37543e1c17f (patch) | |
| tree | b393b5a3a5b90492ec4fdd64568e6003eef02462 /virt | |
| parent | f9cb6b6124ac3e1586251329e51b898f1d0a54e6 (diff) | |
Bluetooth: prefetch channel before killing sock
[ Upstream commit 2a154903cec20fb64ff4d7d617ca53c16f8fd53a ]
Prefetch channel before killing sock in order to fix UAF like
BUG: KASAN: use-after-free in l2cap_sock_release+0x24c/0x290 net/bluetooth/l2cap_sock.c:1212
Read of size 8 at addr ffff8880944904a0 by task syz-fuzzer/9751
Reported-by: syzbot+c3c5bdea7863886115dc@syzkaller.appspotmail.com
Fixes: 6c08fc896b60 ("Bluetooth: Fix refcount use-after-free issue")
Cc: Manish Mandlik <mmandlik@google.com>
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions