linux-kernel - [PATCH v3 0/2] vt: fix some vt

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

Date:   Sat, 21 Mar 2020 20:43:03 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>
Cc:     linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        syzkaller-bugs@...glegroups.com,
        Eric Dumazet <edumazet@...gle.com>,
        Nicolas Pitre <nico@...xnic.net>
Subject: [PATCH v3 0/2] vt: fix some vt_ioctl races

Fix VT_DISALLOCATE freeing an in-use virtual console, and fix a
use-after-free in vt_in_use().

Changed since v2:
    - Implemented tty_port_operations::destruct().
    - Added comments regarding vt_in_use() locking.

Changed since v1:
    - Made the vc_data be freed via tty_port refcounting.
    - Added patch to fix a use-after-free in vt_in_use().

Eric Biggers (2):
  vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
  vt: vt_ioctl: fix use-after-free in vt_in_use()

 drivers/tty/vt/vt.c       | 23 ++++++++++++++++++++++-
 drivers/tty/vt/vt_ioctl.c | 28 ++++++++++++++++------------
 2 files changed, 38 insertions(+), 13 deletions(-)

-- 
2.25.2