Kernel Samepage Merging (KSM) in the Linux kernel 2.6.32 up to and including 4.x does not prevent use of a write-timing side channel, which allows guest OS users to defeat the ASLR protection mechanism on other guest OS instances via a Cross-VM ASL INtrospection (CAIN) attack. NOTE: the vendor states "Basically if you care about this attack vector, disable deduplication." Share-until-written approaches for memory conservation among mutually untrusting tenants are inherently detectable for information disclosure, and can be classified as potentially misunderstood behaviors rather than vulnerabilities
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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linux linux kernel |
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redhat enterprise linux 4.0 |
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redhat enterprise linux 7.0 |
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redhat enterprise linux 6.0 |
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redhat enterprise linux 5.0 |