CVE-2024-47687

5.5 · MEDIUM

Published Oct 21, 2024 linux CWE-908 EPSS 0.24% (14th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-47687 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 21, 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:

vdpa/mlx5: Fix invalid mr resource destroy

Certain error paths from mlx5_vdpa_dev_add() can end up releasing mr

resources which never got initialized in the first place.

This patch adds the missing check in mlx5_vdpa_destroy_mr_resources()

to block releasing non-initialized mr resources.

Reference trace:

mlx5_core 0000:08:00.2: mlx5_vdpa_dev_add:3274:(pid 2700) warning: No mac address provisioned?

BUG: kernel NULL pointer dereference, address: 0000000000000000

#PF: supervisor read access in kernel mode

#PF: error_code(0x0000) - not-present page

PGD 140216067 P4D 0

Oops: 0000 [#1] PREEMPT SMP NOPTI

CPU: 8 PID: 2700 Comm: vdpa Kdump: loaded Not tainted 5.14.0-496.el9.x86_64 #1

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014

RIP: 0010:vhost_iotlb_del_range+0xf/0xe0 [vhost_iotlb]

Code: [...]

RSP: 0018:ff1c823ac23077f0 EFLAGS: 000102

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	>= 6.7, < 6.10.13	Affected

References

Ref git.kernel.org/stable/c/5fe351def237df1ad29aa8af574350bc5340b4cf Ref git.kernel.org/stable/c/b6fbb1c7801f46a0e5461c02904eab0d7535c790 Ref git.kernel.org/stable/c/dc12502905b7a3de9097ea6b98870470c2921e09

Frequently Asked Questions

What is CVE-2024-47687?

CVE-2024-47687 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-47687?

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-2024-47687?

How can CyberStrike help with CVE-2024-47687?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-47687 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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