From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+e2df3a66f7d16fa6ec55@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [bluetooth?] KASAN: null-ptr-deref Write in l2cap_sock_resume_cb (4)
Date: Tue, 8 Jul 2025 08:59:29 +0800 [thread overview]
Message-ID: <20250708005930.2818-1-hdanton@sina.com> (raw)
In-Reply-To: <686c12bd.a70a0220.29fe6c.0b13.GAE@google.com>
> Date: Mon, 07 Jul 2025 11:32:29 -0700
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 7482bb149b9f Merge branch 'for-next/core' into for-kernelci
> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> console output: https://syzkaller.appspot.com/x/log.txt?x=1597828c580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=3c06e3e2454512b3
> dashboard link: https://syzkaller.appspot.com/bug?extid=e2df3a66f7d16fa6ec55
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17c4cbd4580000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d11f70580000
#syz test
--- x/net/bluetooth/l2cap_sock.c
+++ y/net/bluetooth/l2cap_sock.c
@@ -1703,6 +1703,9 @@ static void l2cap_sock_resume_cb(struct
{
struct sock *sk = chan->data;
+ /* sock dead? */
+ if (!sk)
+ return;
if (test_and_clear_bit(FLAG_PENDING_SECURITY, &chan->flags)) {
sk->sk_state = BT_CONNECTED;
chan->state = BT_CONNECTED;
--
next prev parent reply other threads:[~2025-07-08 0:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-07 18:32 syzbot
2025-07-08 0:59 ` Hillf Danton [this message]
2025-07-08 1:30 ` syzbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250708005930.2818-1-hdanton@sina.com \
--to=hdanton@sina.com \
--cc=linux-kernel@vger.kernel.org \
--cc=syzbot+e2df3a66f7d16fa6ec55@syzkaller.appspotmail.com \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®