linux-kernel - [syzbot] Monthly usb report (Jan 2026)

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Message-ID: <697a9028.a70a0220.9914.000d.GAE@google.com>
Date: Wed, 28 Jan 2026 14:39:36 -0800
From: syzbot <syzbot+list5e77845208a4007a1950@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] Monthly usb report (Jan 2026)

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, 84 issues are still open and 409 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  7048    Yes   KASAN: use-after-free Read in v4l2_fh_init
                   https://syzkaller.appspot.com/bug?extid=c025d34b8eaa54c571b8
<2>  4608    Yes   WARNING in usb_free_urb
                   https://syzkaller.appspot.com/bug?extid=b466336413a1fba398a5
<3>  3403    Yes   KASAN: use-after-free Read in v4l2_fh_open
                   https://syzkaller.appspot.com/bug?extid=b2391895514ed9ef4a8e
<4>  2251    Yes   INFO: task hung in usbdev_open (2)
                   https://syzkaller.appspot.com/bug?extid=b73659f5bb96fac34820
<5>  2242    Yes   possible deadlock in input_inject_event
                   https://syzkaller.appspot.com/bug?extid=79c403850e6816dc39cf
<6>  2160    Yes   INFO: task hung in jbd2_journal_commit_transaction (5)
                   https://syzkaller.appspot.com/bug?extid=3071bdd0a9953bc0d177
<7>  2111    Yes   WARNING in __alloc_workqueue
                   https://syzkaller.appspot.com/bug?extid=392a2c3f461094707435
<8>  1416    Yes   KASAN: use-after-free Read in em28xx_init_extension (2)
                   https://syzkaller.appspot.com/bug?extid=99d6c66dbbc484f50e1c
<9>  1304    Yes   WARNING in enable_work
                   https://syzkaller.appspot.com/bug?extid=7053fbd8757fecbbe492
<10> 964     Yes   INFO: task hung in hub_port_init (3)
                   https://syzkaller.appspot.com/bug?extid=b6f11035e572f08bc20f

---
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 syzkaller@...glegroups.com.

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