From: Christian Brauner <christian.brauner@ubuntu.com> To: Aleksa Sarai <cyphar@cyphar.com> Cc: containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Alexander Viro <viro@zeniv.linux.org.uk>, linux-kselftest@vger.kernel.org, linux-fsdevel@vger.kernel.org, Shuah Khan <shuah@kernel.org> Subject: Re: [PATCH] openat2: reject RESOLVE_BENEATH|RESOLVE_IN_ROOT Date: Fri, 9 Oct 2020 13:50:14 +0200 [thread overview] Message-ID: <20201009115014.ft7kjyejhqvommnv@wittgenstein> (raw) In-Reply-To: <20201007103608.17349-1-cyphar@cyphar.com> On Wed, Oct 07, 2020 at 09:36:08PM +1100, Aleksa Sarai wrote: > This was an oversight in the original implementation, as it makes no > sense to specify both scoping flags to the same openat2(2) invocation > (before this patch, the result of such an invocation was equivalent to > RESOLVE_IN_ROOT being ignored). > > This is a userspace-visible ABI change, but the only user of openat2(2) > at the moment is LXC which doesn't specify both flags and so no > userspace programs will break as a result. Indeed! > > Fixes: fddb5d430ad9 ("open: introduce openat2(2) syscall") > Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> > Acked-by: Christian Brauner <christian.brauner@ubuntu.com> > Cc: <stable@vger.kernel.org> # v5.6+ > --- Thanks! This is a good fix imho. Christian _______________________________________________ Containers mailing list Containers@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/containers
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From: Christian Brauner <christian.brauner@ubuntu.com> To: Aleksa Sarai <cyphar@cyphar.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk>, Shuah Khan <shuah@kernel.org>, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH] openat2: reject RESOLVE_BENEATH|RESOLVE_IN_ROOT Date: Fri, 9 Oct 2020 13:50:14 +0200 [thread overview] Message-ID: <20201009115014.ft7kjyejhqvommnv@wittgenstein> (raw) In-Reply-To: <20201007103608.17349-1-cyphar@cyphar.com> On Wed, Oct 07, 2020 at 09:36:08PM +1100, Aleksa Sarai wrote: > This was an oversight in the original implementation, as it makes no > sense to specify both scoping flags to the same openat2(2) invocation > (before this patch, the result of such an invocation was equivalent to > RESOLVE_IN_ROOT being ignored). > > This is a userspace-visible ABI change, but the only user of openat2(2) > at the moment is LXC which doesn't specify both flags and so no > userspace programs will break as a result. Indeed! > > Fixes: fddb5d430ad9 ("open: introduce openat2(2) syscall") > Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> > Acked-by: Christian Brauner <christian.brauner@ubuntu.com> > Cc: <stable@vger.kernel.org> # v5.6+ > --- Thanks! This is a good fix imho. Christian
next prev parent reply other threads:[~2020-10-09 11:50 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-10-07 10:36 [PATCH] openat2: reject RESOLVE_BENEATH|RESOLVE_IN_ROOT Aleksa Sarai 2020-10-07 10:36 ` Aleksa Sarai 2020-10-09 11:50 ` Christian Brauner [this message] 2020-10-09 11:50 ` Christian Brauner 2020-10-27 22:28 ` Shuah Khan 2020-10-27 22:28 ` Shuah Khan 2020-10-27 23:39 ` Aleksa Sarai
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