The InfiniBand (IB) implementation in the Linux kernel package before
2.6.32-504.12.2 on Red Hat Enterprise Linux (RHEL) 6 does not properly
restrict use of User Verbs for registration of memory regions, which
allows local users to access arbitrary physical memory locations, and
consequently cause a denial of service (system crash) or gain
privileges, by leveraging permissions on a uverbs device under
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disclosed, or updated in CVE.
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