Kernel Samepage Merging (KSM) in the Linux kernel 2.6.32 through 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
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: certcc
Published: 2017-03-03T11:00:00
Updated: 2024-08-06T05:32:20.252Z
Reserved: 2015-04-03T00:00:00
Link: CVE-2015-2877
Vulnrichment
No data.
NVD
Status : Modified
Published: 2017-03-03T11:59:00.147
Modified: 2024-08-06T06:15:20.940
Link: CVE-2015-2877
Redhat