From: Greg KH <greg@kroah.com>
To: 章怿贺 <12421252@zju.edu.cn>
Cc: security@kernel.org, linux-ext4@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: Re: [SECURITY] ext4: KASAN use-after-free and Oops in ext4_xattr_set_entry with crafted ext4 image
Date: Thu, 6 Nov 2025 17:50:35 +0900 [thread overview]
Message-ID: <2025110602-display-remodeler-80f0@gregkh> (raw)
In-Reply-To: <58255d5d.20a1f.19a585765c9.Coremail.12421252@zju.edu.cn>
On Thu, Nov 06, 2025 at 04:45:14PM +0800, 章怿贺 wrote:
> Hi Greg,
>
> Thank you for your explanation and suggestions.
Please always cc: everyone on the emails, direct emails don't scale :)
> I ran e2fsck -fn on the extracted image and it does report errors
> (including “padding at end of block bitmap is not set”), so it seems
> fsck already detects the corruption. Next time I will evaluate the
> impact more carefully before contacting the Linux community again.
That's great to hear, but I'm sure the ext4 developers would still
appreciate a kernel patch for this if you have one :)
thanks,
greg k-h
next prev parent reply other threads:[~2025-11-06 8:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-05 14:39 [SECURITY] ext4: KASAN use-after-free and Oops in ext4_xattr_set_entry with crafted ext4 image 章怿贺
2025-11-06 7:00 ` Greg KH
[not found] ` <58255d5d.20a1f.19a585765c9.Coremail.12421252@zju.edu.cn>
2025-11-06 8:50 ` Greg KH [this message]
2025-11-06 14:09 ` Theodore Ts'o
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