[syzbot] Monthly usb report (Oct 2025)

[syzbot]

Hello usb maintainers/developers,

This is a 31-day syzbot report for the usb subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/usb

During the period, 4 new issues were detected and 2 were fixed.
In total, 79 issues are still open and 398 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 5985 Yes KASAN: use-after-free Read in v4l2_fh_init
https://syzkaller.appspot.com/bug?extid=c025d34b8eaa54c571b8
<2> 3364 Yes WARNING in usb_free_urb
https://syzkaller.appspot.com/bug?extid=b466336413a1fba398a5
<3> 2780 Yes KASAN: use-after-free Read in v4l2_fh_open
https://syzkaller.appspot.com/bug?extid=b2391895514ed9ef4a8e
<4> 1578 Yes INFO: task hung in usbdev_open (2)
https://syzkaller.appspot.com/bug?extid=b73659f5bb96fac34820
<5> 1405 Yes KASAN: use-after-free Read in em28xx_init_extension (2)
https://syzkaller.appspot.com/bug?extid=99d6c66dbbc484f50e1c
<6> 998 Yes WARNING in enable_work
https://syzkaller.appspot.com/bug?extid=7053fbd8757fecbbe492
<7> 807 Yes INFO: rcu detected stall in syscall_exit_to_user_mode (2)
https://syzkaller.appspot.com/bug?extid=a68ef3b1f46bc3aced5c
<8> 806 Yes INFO: task hung in hub_port_init (3)
https://syzkaller.appspot.com/bug?extid=b6f11035e572f08bc20f
<9> 541 Yes WARNING in usb_tx_block/usb_submit_urb
https://syzkaller.appspot.com/bug?extid=355c68b459d1d96c4d06
<10> 501 No INFO: task hung in hub_event (3)
https://syzkaller.appspot.com/bug?extid=a7edecbf389d11a369d4

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

To disable reminders for individual bugs, reply with the following command:
#syz set <Ref> no-reminders

To change bug's subsystems, reply with:
#syz set <Ref> subsystems: new-subsystem

You may send multiple commands in a single email message.