PT-2024-6858 · Linux+4 · Linux Kernel+4

Published 2024-09-01 · Updated 2025-09-29 · CVE-2024-46838

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the userfaultfd component of the Linux kernel, where the function BUG ON() is incorrectly used when khugepaged retracts page tables in file mappings without holding the mmap lock. This could potentially lead to a denial of service. The vulnerability is associated with the incorrect removal of page tables, which may cause issues with transhuge pages in both file and anonymous mappings.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

ALSA-2025_16880

ALT-PU-2024-13979

BDU:2024-08080

CVE-2024-46838

OESA-2024-2296

USN-7154-1

USN-7154-2

USN-7155-1

USN-7156-1

USN-7196-1

Affected Products

Alt Linux

Linuxmint

Linux Kernel

Red Os

Ubuntu

References · 742

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46838.json · Exploit
• https://ubuntu.com/security/CVE-2024-41079 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46753 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-53057 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-42295 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46795 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-36889 · Security Note
• https://ubuntu.com/security/CVE-2024-45026 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-42127 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46815 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46825 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-43895 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-42238 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-42278 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46868 · Vendor Advisory