KASAN: use-after-free Write in null_skcipher_crypt

[Tadeusz Struk]

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+d2c5e6...@syzkaller.appspotmail.com

Tested on:

commit: 56e337f2 Revert "gpio: Revert regression in sysfs-gpio..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=d35f9bc6884af6c9
dashboard link: https://syzkaller.appspot.com/bug?extid=d2c5e6980bfc84513464
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.

[Tadeusz Struk]

#syz fix: esp: Fix possible buffer overflow in ESP transformation

[syzbot]

> #syz fix: esp: Fix possible buffer overflow in ESP transformation

Your 'fix:' command is accepted, but please keep syzkall...@googlegroups.com mailing list in CC next time. It serves as a history of what happened with each bug report. Thank you.

[Tadeusz Struk]

[syzbot]

> #syz fix: esp: Fix possible buffer overflow in ESP transformation

Your 'fix:' command is accepted, but please keep syzkall...@googlegroups.com mailing list in CC next time. It serves as a history of what happened with each bug report. Thank you.

>

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