From: Andy Lutomirski <luto@amacapital.net>
Date: Wed, 8 Oct 2014 19:32:47 +0000 (-0700)
Subject: fs: Add a missing permission check to do_umount
X-Git-Tag: omap-for-v3.19/prcm-cleanup~75^2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1480dcc3c706e309a88884723446f2e84fedd5b;p=pandora-kernel.git

fs: Add a missing permission check to do_umount

Accessing do_remount_sb should require global CAP_SYS_ADMIN, but
only one of the two call sites was appropriately protected.

Fixes CVE-2014-7975.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
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