linux-kernel - Re: [syzbot] KASAN: null-ptr-deref Read in filp

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]

Date:   Wed, 14 Jul 2021 15:53:00 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     syzbot <syzbot+283ce5a46486d6acdbaf@...kaller.appspotmail.com>
Cc:     brauner@...nel.org, dvyukov@...gle.com, gregkh@...uxfoundation.org,
        gscrivan@...hat.com, hch@....de, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable-commits@...r.kernel.org,
        stable@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org, viro@...iv.linux.org.uk
Subject: Re: [syzbot] KASAN: null-ptr-deref Read in filp_close (2)

On Mon, Jul 12, 2021 at 09:12:20PM -0700, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
> 
> HEAD commit:    7fef2edf sd: don't mess with SD_MINORS for CONFIG_DEBUG_BL..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=178919b0300000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=20276914ec6ad813
> dashboard link: https://syzkaller.appspot.com/bug?extid=283ce5a46486d6acdbaf
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=120220f2300000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=115f37b4300000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+283ce5a46486d6acdbaf@...kaller.appspotmail.com

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git/ syzbot+283ce5a46486d6acdbaf