linux-kernel - Re: [PATCH] tpm_vtpm_proxy: fix race condition in /dev/vtpmx creation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <4651cf1c-423d-05c2-b4c3-9d829a2eadf4@linux.ibm.com>
Date:   Sat, 13 May 2023 16:49:18 -0400
From:   Stefan Berger <stefanb@...ux.ibm.com>
To:     Jarkko Sakkinen <jarkko.sakkinen@...i.fi>,
        linux-integrity@...r.kernel.org, Peter Huewe <peterhuewe@....de>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Stefan Berger <stefanb@...ux.vnet.ibm.com>
Cc:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tpm_vtpm_proxy: fix race condition in /dev/vtpmx creation



On 5/13/23 13:28, Jarkko Sakkinen wrote:
> /dev/vtpmx is made visible before the workqueue exist, which can lead

which can lead to

> memory corruption in the worst case, if workqueue is used before it has
> been fully initialized. Address this by changing the call order.
> 

Thanks,
    Stefan