linux-kernel - [PATCH v2 0/2] ucounts: Fix rlimit max values check

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:   Mon, 29 Nov 2021 21:37:24 +0100
From:   Alexey Gladkov <legion@...nel.org>
To:     LKML <linux-kernel@...r.kernel.org>,
        Linux Containers <containers@...ts.linux.dev>
Cc:     0day robot <lkp@...el.com>,
        "Eric W . Biederman" <ebiederm@...ssion.com>, lkp@...ts.01.org
Subject: [PATCH v2 0/2] ucounts: Fix rlimit max values check

Checking the rlimit value specified in init_user_ns from the created userns does
not work properly. The issue is that the maximum value is taken by the same
rules as for ucounts. Because of this, we check the current rlimit counter value
with RLIM_INFINITY in init_user_ns.

v2:
- Fix a bug that was found by the lkp project.

--

Alexey Gladkov (2):
  ucounts: Fix rlimit max values check
  ucounts: Move rlimit max values from ucounts max

 include/linux/user_namespace.h | 17 ++++++++++++-----
 kernel/fork.c                  | 10 +++++-----
 kernel/ucount.c                | 19 +++++++++----------
 kernel/user_namespace.c        | 10 +++++-----
 4 files changed, 31 insertions(+), 25 deletions(-)

-- 
2.33.0