A flaw was found in the Linux kernel's memory deduplication mechanism. The max page sharing of Kernel Samepage Merging (KSM), added in Linux kernel version 4.4.0-96.119, can create a side channel. When the attacker and the victim share the same host and the default setting of KSM is "max page sharing=256", it is possible for the attacker to time the unmap to merge with the victim's page. The unmapping time depends on whether it merges with the victim's page and additional physical pages are created beyond the KSM's "max page share". Through these operations, the attacker can leak the victim's page.
Published 2024-01-30 15:15:09
Updated 2024-02-08 16:36:49
Source Red Hat, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2024-0564

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 18 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2024-0564

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
6.5
MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
2.8
3.6
NIST
5.3
MEDIUM CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
1.6
3.6
Red Hat, Inc.
4.7
MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
2.8
1.4
Red Hat, Inc.

CWE ids for CVE-2024-0564

  • The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2024-0564

Products affected by CVE-2024-0564

This web site uses cookies for managing your session, storing preferences, website analytics and additional purposes described in our privacy policy.
By using this web site you are agreeing to CVEdetails.com terms of use!