linux-kernel - Re: KASAN: use-after-free Read in ucma

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200911181939.GA1221970@ziepe.ca>
Date:   Fri, 11 Sep 2020 15:19:39 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     syzbot <syzbot+cc6fc752b3819e082d0c@...kaller.appspotmail.com>
Cc:     dledford@...hat.com, leon@...nel.org, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in ucma_close (2)

On Thu, Sep 10, 2020 at 07:09:24AM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    34d4ddd3 Merge tag 'linux-kselftest-5.9-rc5' of git://git...
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1002ea2d900000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9
> dashboard link: https://syzkaller.appspot.com/bug?extid=cc6fc752b3819e082d0c
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1600e053900000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+cc6fc752b3819e082d0c@...kaller.appspotmail.com

#syz test: https://github.com/jgunthorpe/linux ucma_migrate_fix

Jason