linux-kernel - Re: Bug: slab-out-of-bounds Write in __bh

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <31A10938-C36E-40A2-8A1D-180BD95528DD@m.fudan.edu.cn>
Date: Fri, 10 Jan 2025 17:21:19 +0800
From: Kun Hu <huk23@...udan.edu.cn>
To: Jan Kara <jack@...e.cz>
Cc: viro@...iv.linux.org.uk,
 brauner@...nel.org,
 linux-fsdevel@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 "jjtan24@...udan.edu.cn" <jjtan24@...udan.edu.cn>
Subject: Re: Bug: slab-out-of-bounds Write in __bh_read

> 
> OK. Checking the syzlang reproducer the same comment as for other
> filesystem bugs applies - please run with CONFIG_BLK_DEV_WRITE_MOUNTED
> disabled to rule out corruption of a filesystem while it is mounted.
> 
> 

Hi Jan,

We have reproduced the crash with CONFIG_BLK_DEV_WRITE_MOUNTED disabled to obtain the same crash log. The new crash log, along with C and Syzlang reproducers are provided below:

Crash log: https://drive.google.com/file/d/1FiCgo05oPheAt4sDQzRYTQwl0-CY6rvi/view?usp=sharing
C reproducer: https://drive.google.com/file/d/1TTR9cquaJcMYER6vtYUGh3gOn_mROME4/view?usp=sharing
Syzlang reproducer: https://drive.google.com/file/d/1R9QDUP2r7MI4kYMiT_yn-tzm6NqmcEW-/view?usp=sharing

I’m not sure if this is sufficient to help locate the bug? If you need additional information, please let me know.

Thanks,
Kun Hu