[syzbot] Monthly serial report (Aug 2026)

Hello serial maintainers/developers,

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

During the period, 3 new issues were detected and 0 were fixed.
In total, 17 issues are still open and 48 have already been fixed.
There are also 3 low-priority issues.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 30      No    INFO: task hung in tty_release_struct (8)
                  https://syzkaller.appspot.com/bug?extid=02452abfa3790d12a1a1
<2> 15      No    KASAN: slab-out-of-bounds Write in do_con_write (3)
                  https://syzkaller.appspot.com/bug?extid=8e9c1abac3ceb45abffe
<3> 3       No    KASAN: slab-use-after-free Read in stop_tty
                  https://syzkaller.appspot.com/bug?extid=2932e8970a6398db95c3
<4> 2       No    KASAN: slab-use-after-free Read in serial_core_unregister_port
                  https://syzkaller.appspot.com/bug?extid=9f57c1b2792029198fcf
<5> 274     Yes   INFO: task can't die in show_free_areas
                  https://syzkaller.appspot.com/bug?extid=8f41dccfb6c03cc36fd6
<6> 158     Yes   possible deadlock in tty_buffer_flush (3)
                  https://syzkaller.appspot.com/bug?extid=52cf91760dcb1dac6376
<7> 5       No    KASAN: slab-use-after-free Write in tty_init_dev
                  https://syzkaller.appspot.com/bug?extid=fe63e4d633540f230624
<8> 3       Yes   memory leak in gsm_activate_mux
                  https://syzkaller.appspot.com/bug?extid=b5d1f455d385b2c7da3c

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