CVE-2024-40952

5.5 · MEDIUM

Published Jul 12, 2024 linux CWE-476 EPSS 0.24% (15th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-40952 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

ocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()

bdev->bd_super has been removed and commit 8887b94d9322 change the usage

from bdev->bd_super to b_assoc_map->host->i_sb. This introduces the

following NULL pointer dereference in ocfs2_journal_dirty() since

b_assoc_map is still not initialized. This can be easily reproduced by

running xfstests generic/186, which simulate no more credits.

[ 134.351592] BUG: kernel NULL pointer dereference, address: 0000000000000000

...

[ 134.355341] RIP: 0010:ocfs2_journal_dirty+0x14f/0x160 [ocfs2]

...

[ 134.365071] Call Trace:

[ 134.365312] <TASK>

[ 134.365524] ? __die_body+0x1e/0x60

[ 134.365868] ? page_fault_oops+0x13d/0x4f0

[ 134.366265] ? __pfx_bit_wait_io+0x10/0x10

[ 134.366659] ? schedule+0x27/0xb0

[ 134.366981] ? exc_page_fault+0x6a/0x140

[ 134.367356] ? asm_exc_page_fault+0x26/0x30

[ 134.367762] ? ocfs2_journal_dirty+0x14f/0x160 [ocfs2]

[ 134.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
linux	linux_kernel	>= 6.6, < 6.6.36	Affected

References

Ref git.kernel.org/stable/c/0550ad87711f815b3d73e487ec58ca7d8f56edbc Ref git.kernel.org/stable/c/58f7e1e2c9e72c7974054c64c3abeac81c11f822 Ref git.kernel.org/stable/c/72663d3e09091f431a0774227ca207c0358362dd Ref git.kernel.org/stable/c/0550ad87711f815b3d73e487ec58ca7d8f56edbc Ref git.kernel.org/stable/c/58f7e1e2c9e72c7974054c64c3abeac81c11f822 Ref git.kernel.org/stable/c/72663d3e09091f431a0774227ca207c0358362dd

Frequently Asked Questions

What is CVE-2024-40952?

CVE-2024-40952 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-40952?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-40952?

How can CyberStrike help with CVE-2024-40952?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-40952 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.

Continuous Pentesting

Automated penetration testing that runs continuously, not just quarterly.

Code Review

AI-driven PR review catches vulnerable dependencies before they ship.

HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

Related MEDIUM CVEs from 2024

View all →

6.9

CVE-2023-3726

OCSInventory allow stored email template with special characters that lead to a Stored cross-site Sc

6.9

CVE-2023-51719