Thread (44 messages) 44 messages, 13 authors, 2011-03-26

Re: [PATCH v2] net: don't allow CAP_NET_ADMIN to load non-netdev kernel modules

From: Michael Tokarev <hidden>
Date: 2011-03-02 07:15:13
Also in: lkml

02.03.2011 00:33, Vasiliy Kulikov wrote:
Since a8f80e8ff94ecba629542d9b4b5f5a8ee3eb565c any process with
CAP_NET_ADMIN may load any module from /lib/modules/.  This doesn't mean
that CAP_NET_ADMIN is a superset of CAP_SYS_MODULE as modules are
limited to /lib/modules/**.  However, CAP_NET_ADMIN capability shouldn't
allow anybody load any module not related to networking.

This patch restricts an ability of autoloading modules to netdev modules
with explicit aliases.  This fixes CVE-2011-1019.
[]
Reference: https://lkml.org/lkml/2011/2/24/203

Signed-off-by: Vasiliy Kulikov <redacted>
This looks much saner :)

Signed-off-by: Michael Tokarev <redacted>

/mjt
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