CVE-2024-56611
kernel: mm/mempolicy: fix migrate_to_node() assuming there is at least one VMA in a MM
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 27, 2024
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel. A local user can cause a Denial of Service (DoS) by crashing the system during page migration operations. The issue stems from the memory policy subsystem incorrectly assuming an address space contains at least one virtual memory area, resulting in a null pointer dereference when attempting to access non-existent memory mappings.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference