[syzbot] Monthly net report (Jan 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, 7 new issues were detected and 10 were fixed.
In total, 101 issues are still open and 1656 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 22186 Yes KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
https://syzkaller.appspot.com/bug?extid=5fe14f2ff4ccbace9a26
<2> 8157 Yes KMSAN: uninit-value in eth_type_trans (2)
https://syzkaller.appspot.com/bug?extid=0901d0cc75c3d716a3a3
<3> 3455 Yes INFO: task hung in linkwatch_event (4)
https://syzkaller.appspot.com/bug?extid=2ba2d70f288cf61174e4
<4> 2897 Yes WARNING in rcu_check_gp_start_stall
https://syzkaller.appspot.com/bug?extid=111bc509cd9740d7e4aa
<5> 2295 Yes INFO: task hung in synchronize_rcu (4)
https://syzkaller.appspot.com/bug?extid=222aa26d0a5dbc2e84fe
<6> 2040 Yes KMSAN: uninit-value in bpf_prog_run_generic_xdp
https://syzkaller.appspot.com/bug?extid=0e6ddb1ef80986bdfe64
<7> 1958 Yes INFO: task hung in del_device_store
https://syzkaller.appspot.com/bug?extid=6d10ecc8a97cc10639f9
<8> 1626 Yes INFO: task hung in addrconf_dad_work (5)
https://syzkaller.appspot.com/bug?extid=82ccd564344eeaa5427d
<9> 1391 No KASAN: slab-use-after-free Read in xfrm_state_find
https://syzkaller.appspot.com/bug?extid=e136d86d34b42399a8b1
<10> 1387 Yes INFO: task hung in nfc_rfkill_set_block
https://syzkaller.appspot.com/bug?extid=3e3c2f8ca188e30b1427

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