PT-2024-29170 · Linux+4 · Linux Kernel+4

Joseph Qi · Published 2024-05-30 · Updated 2025-09-29 · CVE-2024-40952

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 A NULL pointer dereference vulnerability has been resolved in the Linux kernel. The issue occurs in the ocfs2 journal dirty() function due to the removal of bdev->bd super and the change in usage from bdev->bd super to b assoc map->host->i sb, which introduces a NULL pointer dereference since b assoc map is still not initialized. This can be easily reproduced by running xfstests generic/186, which simulates no more credits.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2025_16880

ALT-PU-2024-13979

BDU:2025-03453

CVE-2024-40952

OESA-2024-1897

USN-6999-1

USN-6999-2

USN-7004-1

USN-7005-1

USN-7005-2

USN-7008-1

USN-7029-1

Affected Products

Alt Linux

Linuxmint

Linux Kernel

Red Os

Ubuntu

References · 306

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40952.json · Exploit
• https://ubuntu.com/security/CVE-2024-40957 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7004-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-40952 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-40912 · Security Note
• https://ubuntu.com/security/CVE-2024-40984 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6999-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6999-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-40973 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-39488 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-41002 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-40906 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-38628 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-34027 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-40974 · Security Note