CVE-2024-49968
kernel: ext4: filesystems without casefold feature cannot be mounted with siphash
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 21, 2024
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's ext4 filesystem. This vulnerability occurs when an attempt is made to mount an ext4 filesystem using the DX_HASH_SIPHASH default hash version on a filesystem that does not have the casefold feature enabled. Under these specific conditions, the mounting process will fail, leading to a denial of service by preventing access to the filesystem.
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-20 · Improper Input Validation