[syzbot] Monthly usb report (Apr 2026)

[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 1 were fixed.
In total, 80 issues are still open and 415 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 6855 Yes INFO: task hung in lbs_remove_card
https://syzkaller.appspot.com/bug?extid=c99d17aa44dbdba16ad2
<2> 5232 Yes WARNING in usb_free_urb
https://syzkaller.appspot.com/bug?extid=b466336413a1fba398a5
<3> 3941 Yes KASAN: use-after-free Read in v4l2_fh_open
https://syzkaller.appspot.com/bug?extid=b2391895514ed9ef4a8e
<4> 3547 Yes WARNING in cm109_urb_irq_callback/usb_submit_urb
https://syzkaller.appspot.com/bug?extid=2d6d691af5ab4b7e66df
<5> 2716 Yes possible deadlock in input_inject_event
https://syzkaller.appspot.com/bug?extid=79c403850e6816dc39cf
<6> 2701 Yes INFO: task hung in usbdev_open (2)
https://syzkaller.appspot.com/bug?extid=b73659f5bb96fac34820
<7> 2177 Yes INFO: task hung in jbd2_journal_commit_transaction (5)
https://syzkaller.appspot.com/bug?extid=3071bdd0a9953bc0d177
<8> 1441 Yes WARNING in enable_work
https://syzkaller.appspot.com/bug?extid=7053fbd8757fecbbe492
<9> 1436 Yes KASAN: use-after-free Read in em28xx_init_extension (2)
https://syzkaller.appspot.com/bug?extid=99d6c66dbbc484f50e1c
<10> 1400 No KASAN: vmalloc-out-of-bounds Read in kcov_remote_start
https://syzkaller.appspot.com/bug?extid=8a173e13208949931dc7

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