[syzbot] Monthly net report (Jun 2026)

[syzbot]

Hello net maintainers/developers,

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

During the period, 5 new issues were detected and 15 were fixed.
In total, 59 issues are still open and 1748 have already been fixed.
There are also 30 low-priority issues.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 8753 Yes KMSAN: uninit-value in eth_type_trans (2)
https://syzkaller.appspot.com/bug?extid=0901d0cc75c3d716a3a3
<2> 2480 Yes unregister_netdevice: waiting for DEV to become free (9)
https://syzkaller.appspot.com/bug?extid=e2af46126e0644cbebdd
<3> 686 Yes INFO: task hung in tun_chr_close (5)
https://syzkaller.appspot.com/bug?extid=b0ae8f1abf7d891e0426
<4> 456 Yes WARNING in inet_sock_destruct (6)
https://syzkaller.appspot.com/bug?extid=5b3b7e51dda1be027b7a
<5> 447 No possible deadlock in __ipv6_dev_mc_inc
https://syzkaller.appspot.com/bug?extid=afbcf622635e98bf40d2
<6> 443 Yes INFO: task hung in nsim_destroy (4)
https://syzkaller.appspot.com/bug?extid=8141dcbd23a8f857798a
<7> 150 No possible deadlock in __ethtool_get_link_ksettings
https://syzkaller.appspot.com/bug?extid=9bb8bd77f3966641f298
<8> 83 Yes KASAN: use-after-free Read in qdisc_pkt_len_segs_init
https://syzkaller.appspot.com/bug?extid=83181a31faf9455499c5
<9> 67 Yes INFO: rcu detected stall in rescuer_thread (2)
https://syzkaller.appspot.com/bug?extid=d5f7a5097c24c7c2dbbb
<10> 3 Yes memory leak in __vsock_create (2)
https://syzkaller.appspot.com/bug?extid=1b2c9c4a0f8708082678

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