CVE-2024-41031
kernel: mm/filemap: skip to create PMD-sized page cache if needed
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 29, 2024
Updated · November 21, 2025
Description
A vulnerability was found in the Linux kernel related to how large page caching is handled, particularly for AMD64 architectures. The issue stems from the xarray data structure's inability to support PMD-sized page caches when the base page size is larger than MAX_PAGECACHE_ORDER. The particular configuration on ARM64 architectures can potentially lead to untenable resource allocation and system crashes when large pages are manipulated.
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-99 · Improper Control of Resource Identifiers ('Resource Injection')