The vdso_addr function in arch/x86/vdso/vma.c in the Linux kernel
through 3.18.2 does not properly choose memory locations for the vDSO
area, which makes it easier for local users to bypass the ASLR
protection mechanism by guessing a location at the end of a PMD.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[oss-security] 20141209 PIE bypass using VDSO ASLR weakness
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