Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2015-2877 Details

Description

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:3.3 LOWVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=1252096	CVE	Issue TrackingThird Party Advisory
https://www.kb.cert.org/vuls/id/BGAR-A2CNKG	CVE	Third Party AdvisoryUS Government Resource
https://www.kb.cert.org/vuls/id/BLUU-9ZAHZH	CVE	Third Party AdvisoryUS Government Resource
https://www.usenix.org/system/files/conference/woot15/woot15-paper-barresi.pdf	CVE	Technical DescriptionThird Party Advisory
http://www.antoniobarresi.com/files/cain_advisory.txt	CVE	Technical DescriptionThird Party Advisory
http://www.kb.cert.org/vuls/id/935424	CVE	Third Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/76256	CVE	Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1252096	[email protected]	Issue TrackingThird Party Advisory
https://www.kb.cert.org/vuls/id/BGAR-A2CNKG	[email protected]	Third Party AdvisoryUS Government Resource
https://www.kb.cert.org/vuls/id/BLUU-9ZAHZH	[email protected]	Third Party AdvisoryUS Government Resource
https://www.usenix.org/system/files/conference/woot15/woot15-paper-barresi.pdf	[email protected]	Technical DescriptionThird Party Advisory
http://www.antoniobarresi.com/files/cain_advisory.txt	[email protected]	Technical DescriptionThird Party Advisory
http://www.kb.cert.org/vuls/id/935424	[email protected]	Third Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/76256	[email protected]	Third Party AdvisoryVDB Entry

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-200	Exposure of Sensitive Information to an Unauthorized Actor	[email protected]

Affected Products

Product	Versions
linux linux kernel	>= 2.6.32, <= 4.20.15
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.
redhat enterprise linux	4.0 5.0 6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux:4.0:::::::* cpe:2.3:o:redhat:enterprise_linux:5.0:::::::* cpe:2.3:o:redhat:enterprise_linux:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux:7.0:::::::* Remediation No remediation found in references.

Change History

11 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 13, 2026	CVE Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
Aug 6, 2024	CVE Modified	[email protected]
May 17, 2024	CVE Modified	[email protected]
May 14, 2024	CVE Modified	[email protected]
Apr 11, 2024	CVE Modified	[email protected]
Mar 21, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Jun 4, 2020	Reanalysis	[email protected]
Mar 16, 2017	Initial Analysis	[email protected]