CVE-2024-42311

2024-08-1914:16:04

redhat.com

access.redhat.com

linux kernel

cve-2024-42311

hfs_inode_info

hfs_alloc_inode

vulnerability

uninitialized value access

syzbot

hfs_inode_info

hfs_revalidate_dentry

hfs_ext_read_extent

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

5.3

Confidence

High

EPSS

Percentile

5.1%

JSON

A flaw was found in the HFS filesystem in the Linux kernel due to uninitialized fields in the hfs_inode_info structure. The .tz_secondswest, .cached_start, and .cached_blocks fields are not initialized after calling hfs_alloc_inode(). This omission led to undefined behavior and potential security issues, as reported by the Kernel Memory Sanitizer (KMSAN).

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.