All of lore.kernel.org
 help / color / mirror / Atom feed
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

  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=2025110602-display-remodeler-80f0@gregkh \
    --to=greg@kroah.com \
    --cc=12421252@zju.edu.cn \
    --cc=linux-ext4@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=security@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.