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CVE-2024-40962

5.5 · MEDIUM

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-cas…

Published Jul 12, 2024CWE-476EPSS 0.24%

Overview

CVE-2024-40962 is a medium-severity vulnerability. 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, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/082b3d4e788953a3ff42ecdb70c4210149076285Refgit.kernel.org/stable/c/25cfe59f4470a051d1b80f51fa0ca3a5048e4a19Refgit.kernel.org/stable/c/cebae292e0c32a228e8f2219c270a7237be24a6aRefgit.kernel.org/stable/c/082b3d4e788953a3ff42ecdb70c4210149076285Refgit.kernel.org/stable/c/25cfe59f4470a051d1b80f51fa0ca3a5048e4a19Refgit.kernel.org/stable/c/cebae292e0c32a228e8f2219c270a7237be24a6a

How CyberStrike helps

Frequently asked questions

What is CVE-2024-40962?

CVE-2024-40962 is a medium-severity vulnerability. 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?

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

How can CyberStrike help with CVE-2024-40962?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-40962 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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