Re: [PATCH v2] net: tls: fix possible race condition between do_tls_getsockopt_conf() and do_tls_setsockopt_conf()

[Hangyu Hua]

On 26/3/2023 22:12, Guenter Roeck wrote:
> Hi,
>
> On Tue, Feb 28, 2023 at 10:33:44AM +0800, Hangyu Hua wrote:
> > ctx->crypto_send.info is not protected by lock_sock in
> > do_tls_getsockopt_conf(). A race condition between do_tls_getsockopt_conf()
> > and do_tls_setsockopt_conf() can cause a NULL point dereference or
> > use-after-free read when memcpy.
> >
> > Please check the following link for pre-information:
> >   https://lore.kernel.org/all/Y/ht6gQL+u6fj3dG@hog/
> >
> > Fixes: 3c4d7559159b ("tls: kernel TLS support")
> > Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx>
>
> This patch has been applied to v6.1.y. Should it be applied to older kernel
> branches as well ? I know it doesn't apply cleanly, but the conflicts
> should be easy to resolve. I'll be happy to send backports to stable@ if
> needed.
>
> Thanks,
> Guenter

Look like Meena Shanmugam is doing this. Please check this:

https://lore.kernel.org/all/20230323005440.518172-2-meenashanmugam@xxxxxxxxxx/

Thanks for your attention.

Thanks,
Hangyu