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

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Message-ID: <2023051547-arming-kinsman-4f0a@gregkh>
Date: Mon, 15 May 2023 14:05:18 +0200
From: Greg KH <greg@...ah.com>
To: oss-security@...ts.openwall.com
Cc: hackerzheng666@...il.com
Subject: Re: linux kernel 6.3.0: slab-use-after-free Write in
 txEnd due to race condition

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@...nel.org> (odd fixer:JFS FILESYSTEM)
	jfs-discussion@...ts.sourceforge.net (open list:JFS FILESYSTEM)
	linux-kernel@...r.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?

thanks,

greg k-h

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