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fs: Add a missing permission check to do_umount
authorAndy Lutomirski <luto@amacapital.net>
Wed, 8 Oct 2014 19:32:47 +0000 (12:32 -0700)
committerAndy Lutomirski <luto@amacapital.net>
Wed, 8 Oct 2014 19:32:47 +0000 (12:32 -0700)
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>

No differences found
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