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
History

No history.

cve-icon 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

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-03-03T11:59:00.147

Modified: 2024-08-06T06:15:20.940

Link: CVE-2015-2877

cve-icon Redhat

Severity : Low

Publid Date: 2015-08-05T00:00:00Z

Links: CVE-2015-2877 - Bugzilla