diff options
| author | Hyunwoo Kim <v4bel@theori.io> | 2023-12-09 04:42:10 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-20 15:38:00 +0100 |
| commit | bff7ddb0d9d515170dcf133d239dba87c47c8cdb (patch) | |
| tree | 159e4918e2baade616682a760481316564938225 /scripts/sign-file.c | |
| parent | 4b7e76b9d815de855fb7ef1338a5913be974e199 (diff) | |
atm: Fix Use-After-Free in do_vcc_ioctl
[ Upstream commit 24e90b9e34f9e039f56b5f25f6e6eb92cdd8f4b3 ]
Because do_vcc_ioctl() accesses sk->sk_receive_queue
without holding a sk->sk_receive_queue.lock, it can
cause a race with vcc_recvmsg().
A use-after-free for skb occurs with the following flow.
```
do_vcc_ioctl() -> skb_peek()
vcc_recvmsg() -> skb_recv_datagram() -> skb_free_datagram()
```
Add sk->sk_receive_queue.lock to do_vcc_ioctl() to fix this issue.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Hyunwoo Kim <v4bel@theori.io>
Link: https://lore.kernel.org/r/20231209094210.GA403126@v4bel-B760M-AORUS-ELITE-AX
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts/sign-file.c')
0 files changed, 0 insertions, 0 deletions