# Re: KASAN: use-after-free Read in nr\_rx\_frame (2)

- From: syzbot \<hidden\>
- Date: 2019-07-31 21:32:03 
- List: netdev
- Page: https://ratatoskr.run/netdev/2019/07/5674243
- Thread: https://ratatoskr.run/linux-hams/2019/07/5674243/t.md

```text
syzbot has bisected this bug to:

commit c8c8218ec5af5d2598381883acbefbf604e56b5e
Author: Cong Wang [ref]
Date:   Thu Jun 27 21:30:58 2019 +0000

    netrom: fix a memory leak in nr_rx_frame()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=122ddaec600000
start commit:   629f8205 Merge tag 'for-linus-20190730' of git://git.kerne..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=112ddaec600000
console output: https://syzkaller.appspot.com/x/log.txt?x=162ddaec600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e397351d2615e10
dashboard link: https://syzkaller.appspot.com/bug?extid=701728447042217b67c1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14a6e008600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11937d92600000

Reported-by: <redacted>
Fixes: c8c8218ec5af ("netrom: fix a memory leak in nr_rx_frame()")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection
```