CVE-2024-40962

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-2024-40962 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:

btrfs: zoned: allocate dummy checksums for zoned NODATASUM writes

Shin'ichiro reported that when he's running fstests' test-case

btrfs/167 on emulated zoned devices, he's seeing the following NULL

pointer dereference in 'btrfs_zone_finish_endio()':

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN NOPTI

KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]

CPU: 4 PID: 2332440 Comm: kworker/u80:15 Tainted: G W 6.10.0-rc2-kts+ #4

Hardware name: Supermicro Super Server/X11SPi-TF, BIOS 3.3 02/21/2020

Workqueue: btrfs-endio-write btrfs_work_helper [btrfs]

RIP: 0010:btrfs_zone_finish_endio.part.0+0x34/0x160 [btrfs]

RSP: 0018:ffff88867f107a90 EFLAGS: 00010206

RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff893e5534

RDX: 0000000000000011 RSI: 0000000000000004 RDI: 0000000000000088

RBP: 000000000000

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	>= 6.5, < 6.6.36	Affected

References

Ref git.kernel.org/stable/c/082b3d4e788953a3ff42ecdb70c4210149076285 Ref git.kernel.org/stable/c/25cfe59f4470a051d1b80f51fa0ca3a5048e4a19 Ref git.kernel.org/stable/c/cebae292e0c32a228e8f2219c270a7237be24a6a Ref git.kernel.org/stable/c/082b3d4e788953a3ff42ecdb70c4210149076285 Ref git.kernel.org/stable/c/25cfe59f4470a051d1b80f51fa0ca3a5048e4a19 Ref git.kernel.org/stable/c/cebae292e0c32a228e8f2219c270a7237be24a6a

Frequently Asked Questions

What is CVE-2024-40962?

CVE-2024-40962 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-2024-40962?

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-2024-40962?

How can CyberStrike help with CVE-2024-40962?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-40962 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.

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