linux-kernel - Re: [PATCH next] fs/9p: fix uaf in in v9fs_stat2inode

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Message-ID: <Zd8L7RPrPpIB709o@gmail.com>
Date: Wed, 28 Feb 2024 02:33:17 -0800
From: Breno Leitao <leitao@...ian.org>
To: Lizhi Xu <lizhi.xu@...driver.com>
Cc: syzbot+7a3d75905ea1a830dbe5@...kaller.appspotmail.com,
	asmadeus@...ewreck.org, ericvh@...nel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux_oss@...debyte.com, lucho@...kov.net,
	syzkaller-bugs@...glegroups.com, v9fs@...ts.linux.dev
Subject: Re: [PATCH next] fs/9p: fix uaf in in v9fs_stat2inode_dotl

On Fri, Feb 02, 2024 at 08:15:31PM +0800, Lizhi Xu wrote:
> The incorrect logical order of accessing the st object code in v9fs_fid_iget_dotl
> is causing this uaf.
> 
> Fixes: 724a08450f74 ("fs/9p: simplify iget to remove unnecessary paths")
> Reported-and-tested-by: syzbot+7a3d75905ea1a830dbe5@...kaller.appspotmail.com
> Signed-off-by: Lizhi Xu <lizhi.xu@...driver.com>

Tested-by: Breno Leitao <leitao@...ian.org>