[syzbot] Monthly serial report (Sep 2026)

[syzbot]

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, 19 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> 14      No    KASAN: slab-use-after-free Read in kbd_event (2)
                  https://syzkaller.appspot.com/bug?extid=098cefc0911c68db5dab
<2> 5       No    KASAN: slab-use-after-free Read in stop_tty
                  https://syzkaller.appspot.com/bug?extid=2932e8970a6398db95c3
<3> 302     Yes   INFO: task can't die in show_free_areas
                  https://syzkaller.appspot.com/bug?extid=8f41dccfb6c03cc36fd6
<4> 188     Yes   possible deadlock in tty_buffer_flush (3)
                  https://syzkaller.appspot.com/bug?extid=52cf91760dcb1dac6376
<5> 80      Yes   possible deadlock in n_tty_flush_buffer
                  https://syzkaller.appspot.com/bug?extid=d84934b4184d7f9a1aed
<6> 7       Yes   KASAN: slab-use-after-free Write in release_tty
                  https://syzkaller.appspot.com/bug?extid=bca09f5d8b843bbf7571

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