linux-kernel - [syzbot] Monthly usb report (Dec 2025)

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Message-ID: <695237ed.a70a0220.c527.0023.GAE@google.com>
Date: Mon, 29 Dec 2025 00:12:29 -0800
From: syzbot <syzbot+listaf526c275c87de3776e4@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] Monthly usb report (Dec 2025)

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, 8 new issues were detected and 0 were fixed.
In total, 81 issues are still open and 402 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  6725    Yes   KASAN: use-after-free Read in v4l2_fh_init
                   https://syzkaller.appspot.com/bug?extid=c025d34b8eaa54c571b8
<2>  5297    No    WARNING in kcov_remote_start (6)
                   https://syzkaller.appspot.com/bug?extid=3f51ad7ac3ae57a6fdcc
<3>  4187    Yes   WARNING in usb_free_urb
                   https://syzkaller.appspot.com/bug?extid=b466336413a1fba398a5
<4>  3195    Yes   KASAN: use-after-free Read in v4l2_fh_open
                   https://syzkaller.appspot.com/bug?extid=b2391895514ed9ef4a8e
<5>  2150    Yes   INFO: task hung in jbd2_journal_commit_transaction (5)
                   https://syzkaller.appspot.com/bug?extid=3071bdd0a9953bc0d177
<6>  2026    Yes   possible deadlock in input_inject_event
                   https://syzkaller.appspot.com/bug?extid=79c403850e6816dc39cf
<7>  1999    Yes   INFO: task hung in usbdev_open (2)
                   https://syzkaller.appspot.com/bug?extid=b73659f5bb96fac34820
<8>  1413    Yes   KASAN: use-after-free Read in em28xx_init_extension (2)
                   https://syzkaller.appspot.com/bug?extid=99d6c66dbbc484f50e1c
<9>  1199    Yes   WARNING in enable_work
                   https://syzkaller.appspot.com/bug?extid=7053fbd8757fecbbe492
<10> 918     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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