From 102b3d7a649da573055f569fe81aaa68fb0fddbc Mon Sep 17 00:00:00 2001
From: Hyunwoo Kim <v4bel@theori.io>
Date: Sat, 9 Dec 2023 05:05:38 -0500
Subject: [PATCH] UPSTREAM: net/rose: Fix Use-After-Free in rose_ioctl

[ Upstream commit 810c38a369a0a0ce625b5c12169abce1dd9ccd53 ]

Because rose_ioctl() accesses sk->sk_receive_queue
without holding a sk->sk_receive_queue.lock, it can
cause a race with rose_accept().
A use-after-free for skb occurs with the following flow.
```
rose_ioctl() -> skb_peek()
rose_accept() -> skb_dequeue() -> kfree_skb()
```
Add sk->sk_receive_queue.lock to rose_ioctl() to fix this issue.

Bug: 321175740
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Hyunwoo Kim <v4bel@theori.io>
Link: https://lore.kernel.org/r/20231209100538.GA407321@v4bel-B760M-AORUS-ELITE-AX
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 3f1f6a94d8858706863fe90da35663f6e24be274)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I94d2aae6221fb95cb285e1a6d0c6fe39a70e35d2