Commit d6754016 authored by Hyunwoo Kim's avatar Hyunwoo Kim Committed by Lu Wei
Browse files

net/rose: Fix Use-After-Free in rose_ioctl

mainline inclusion
from mainline-v6.7-rc6
commit 810c38a369a0a0ce625b5c12169abce1dd9ccd53
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8RXMW
CVE: CVE-2023-51782

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=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.

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: default avatarHyunwoo Kim <v4bel@theori.io>
Link: https://lore.kernel.org/r/20231209100538.GA407321@v4bel-B760M-AORUS-ELITE-AX


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarLu Wei <luwei32@huawei.com>
parent c114dc3b
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