[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 17 Mar 2021 16:29:58 +0100
From: Salvatore Bonaccorso <carnil@...ian.org>
To: oss-security@...ts.openwall.com
Subject: Re: CVE-2021-20219 Linux kernel: improper
synchronization in flush_to_ldisc() can lead to DoS
Hi Rohit,
On Wed, Mar 17, 2021 at 04:17:05PM +0100, Greg KH wrote:
> On Wed, Mar 17, 2021 at 07:45:59PM +0530, Rohit Keshri wrote:
> > Hello Team,
> >
> > A denial of service vulnerability was found in n_tty_receive_char_special
> > in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker
> > with a normal user privilege could delay the loop (due to a changing
> > ldata->read_head, and a missing sanity check) and cause a threat to the
> > system availability.
> >
> > 'CVE-2021-20219' was assigned by Red Hat.
> >
> > Acknowledgements: Evgenii Shatokhin (Virtuozzo Research LLC)
>
> Really? Not the tools or people that reported this issue and fixed it
> in the community back in 2018?
Can you clarify, would 3d63b7e4ae0d ("n_tty: Fix stall at
n_tty_receive_char_special().") be the upstream fix you are referring
to for it?
Regards,
Salvatore
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
