diff options
| author | Hyunwoo Kim <[email protected]> | 2023-12-12 23:10:56 -0500 |
|---|---|---|
| committer | Paolo Abeni <[email protected]> | 2023-12-14 12:02:45 +0100 |
| commit | 189ff16722ee36ced4d2a2469d4ab65a8fee4198 (patch) | |
| tree | 2e2350fffda48970b46f6d8736f9b16f0145712d /net/ipv4/tcp_input.c | |
| parent | e23c0d21ce9234fbc31ece35663ababbb83f9347 (diff) | |
appletalk: Fix Use-After-Free in atalk_ioctl
Because atalk_ioctl() accesses sk->sk_receive_queue
without holding a sk->sk_receive_queue.lock, it can
cause a race with atalk_recvmsg().
A use-after-free for skb occurs with the following flow.
```
atalk_ioctl() -> skb_peek()
atalk_recvmsg() -> skb_recv_datagram() -> skb_free_datagram()
```
Add sk->sk_receive_queue.lock to atalk_ioctl() to fix this issue.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Hyunwoo Kim <[email protected]>
Link: https://lore.kernel.org/r/20231213041056.GA519680@v4bel-B760M-AORUS-ELITE-AX
Signed-off-by: Paolo Abeni <[email protected]>
Diffstat (limited to 'net/ipv4/tcp_input.c')
0 files changed, 0 insertions, 0 deletions