netdev - Re: [PATCH v2] include/uapi/linux/xfrm.h: Fix XFRM_MSG

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] [day] [month] [year] [list]

Date:   Wed, 15 Sep 2021 10:51:53 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     Eugene Syromiatnikov <esyr@...hat.com>
CC:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Antony Antony <antony.antony@...unet.com>,
        "Christian Langrock" <christian.langrock@...unet.com>,
        Nicolas Dichtel <nicolas.dichtel@...nd.com>,
        <selinux@...r.kernel.org>, Paul Moore <paul@...l-moore.com>,
        Stephen Smalley <stephen.smalley.work@...il.com>,
        "Eric Paris" <eparis@...isplace.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, "Dmitry V. Levin" <ldv@...ace.io>,
        <linux-api@...r.kernel.org>
Subject: Re: [PATCH v2] include/uapi/linux/xfrm.h: Fix XFRM_MSG_MAPPING ABI
 breakage

On Sun, Sep 12, 2021 at 02:22:34PM +0200, Eugene Syromiatnikov wrote:
> Commit 2d151d39073a ("xfrm: Add possibility to set the default to block
> if we have no policy") broke ABI by changing the value of the XFRM_MSG_MAPPING
> enum item, thus also evading the build-time check
> in security/selinux/nlmsgtab.c:selinux_nlmsg_lookup for presence of proper
> security permission checks in nlmsg_xfrm_perms.  Fix it by placing
> XFRM_MSG_SETDEFAULT/XFRM_MSG_GETDEFAULT to the end of the enum, right before
> __XFRM_MSG_MAX, and updating the nlmsg_xfrm_perms accordingly.
> 
> Fixes: 2d151d39073a ("xfrm: Add possibility to set the default to block if we have no policy")
> References: https://lore.kernel.org/netdev/20210901151402.GA2557@altlinux.org/
> Signed-off-by: Eugene Syromiatnikov <esyr@...hat.com>

Applied, thanks a lot Eugene!