Re: linux kernel 6.3.0: slab-use-after-free Write in txEnd due to race condition

[Zheng Hacker <hackerzheng666 () gmail com>]

Greg KH <greg () kroah com> 于2023年5月15日周一 20:05写道：
> On Mon, May 15, 2023 at 09:34:36AM +0800, 蓝色的小羊 wrote:
> > Syzkaller reported an error "slab-use-after-free Write in txEnd".
>
> In the JFS filesystem, right?
>
> <snip>
>
> >  fs/jfs/jfs_debug.c  | 2 ++
>
>         $ ./scripts/get_maintainer.pl fs/jfs/jfs_debug.c
>         Dave Kleikamp <shaggy () kernel org> (odd fixer:JFS FILESYSTEM)
>         jfs-discussion () lists sourceforge net (open list:JFS FILESYSTEM)
>         linux-kernel () vger kernel org (open list)
>
> Any specific reason you didn't send this to the mailing list and
> developers who can review and apply this potential fix to the kernel
> tree?
>
> syzbot-reported issues are not really a new or exciting thing, we get
> loads of them every week (see the syzbot mailing list and summaries).
> What is good is for fixes like this one to be sent to us so that we can
> merge them for all to use.
>
> That is if anyone is actually using the JFS filesystem anymore, it is
> pretty obsolete.  Are you using it?

Hi Greg,

Sorry for our mistake. My friend is not familiar with the rules. We
should send it to OSS-security after the bug is fixed. The patch now
is sent to the open mailing list. Sorry again for the unintentional
mistake.

Best regards,
Zheng


> thanks,
>
> greg k-h