CVE-2024-0564

Updated: 2024-02-09 05:07:44.213596

Description:

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x MEDIUM 6.5

Status

OS name Project name Version Score Severity Status Errata Last updated
AlmaLinux 9.2 ESU kernel 5.14.0 6.5 MEDIUM Ignored 2024-02-09 08:25:39
AlmaLinux 9.2 FIPS kernel 5.14.0 6.5 MEDIUM Ignored 2024-02-09 08:25:40
CentOS 8.4 ELS kernel 4.18.0 6.5 MEDIUM Ignored 2024-02-09 08:25:38
CentOS 8.5 ELS kernel 4.18.0 6.5 MEDIUM Ignored 2024-02-09 08:25:38
Ubuntu 16.04 ELS linux 4.4.0 6.5 MEDIUM Needs Triage 2024-02-09 02:55:18
Ubuntu 16.04 ELS linux-hwe 4.15.0 6.5 MEDIUM Needs Triage 2024-02-09 02:54:34
Ubuntu 18.04 ELS linux 4.15.0 6.5 MEDIUM Needs Triage 2024-02-09 02:55:17