All of lore.kernel.org
 help / color / mirror / Atom feed
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Richard Weinberger <richard@nod.at>
Cc: u-boot@lists.denx.de, upstream+uboot@sigma-star.at,
	trini@konsulko.com, thomas.petazzoni@bootlin.com,
	jmcosta944@gmail.com
Subject: Re: [PATCH v2 4/4] squashfs: Fix stack overflow while symlink resolving
Date: Mon, 12 Aug 2024 09:51:39 +0200	[thread overview]
Message-ID: <20240812095139.32c5cf66@xps-13> (raw)
In-Reply-To: <20240802163647.26674-4-richard@nod.at>

Hi Richard,

richard@nod.at wrote on Fri,  2 Aug 2024 18:36:47 +0200:

> The squashfs driver blindly follows symlinks, and calls sqfs_size()
> recursively. So an attacker can create a crafted filesystem and with
> a deep enough nesting level a stack overflow can be achieved.
> 
> Fix by limiting the nesting level to 8.
> 
> Signed-off-by: Richard Weinberger <richard@nod.at>

Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>

Thanks,
Miquèl

  reply	other threads:[~2024-08-12  7:51 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-02 16:36 [PATCH v2 1/4] squashfs: Fix integer overflow in sqfs_resolve_symlink() Richard Weinberger
2024-08-02 16:36 ` [PATCH v2 2/4] squashfs: Fix integer overflow in sqfs_inode_size() Richard Weinberger
2024-08-02 16:36 ` [PATCH v2 3/4] squashfs: Check sqfs_find_inode() return value Richard Weinberger
2024-08-02 16:36 ` [PATCH v2 4/4] squashfs: Fix stack overflow while symlink resolving Richard Weinberger
2024-08-12  7:51   ` Miquel Raynal [this message]
2024-08-16  3:47 ` [PATCH v2 1/4] squashfs: Fix integer overflow in sqfs_resolve_symlink() Tom Rini

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=20240812095139.32c5cf66@xps-13 \
    --to=miquel.raynal@bootlin.com \
    --cc=jmcosta944@gmail.com \
    --cc=richard@nod.at \
    --cc=thomas.petazzoni@bootlin.com \
    --cc=trini@konsulko.com \
    --cc=u-boot@lists.denx.de \
    --cc=upstream+uboot@sigma-star.at \
    /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.