[syzbot] Monthly usb report (Oct 2025)

[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

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