CVE-2024-43851

5.5 · MEDIUM

Published Aug 17, 2024 linux EPSS 0.21% (11th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-43851 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 17, 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:

soc: xilinx: rename cpu_number1 to dummy_cpu_number

The per cpu variable cpu_number1 is passed to xlnx_event_handler as

argument "dev_id", but it is not used in this function. So drop the

initialization of this variable and rename it to dummy_cpu_number.

This patch is to fix the following call trace when the kernel option

CONFIG_DEBUG_ATOMIC_SLEEP is enabled:

BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274

in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0

preempt_count: 1, expected: 0

CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.0 #53

Hardware name: Xilinx Versal vmk180 Eval board rev1.1 (QSPI) (DT)

Call trace:

dump_backtrace+0xd0/0xe0

show_stack+0x18/0x40

dump_stack_lvl+0x7c/0xa0

dump_stack+0x18/0x34

__might_resched+0x10c/0x140

__might_sleep+0x4c/0xa0

__kmem_cache_alloc_node+0xf4/0x168

kmalloc_tra

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	>= 6.1.77, < 6.1.103	Affected

References

Ref git.kernel.org/stable/c/4a95449dd975e2ea6629a034f3e74b46c9634916 Ref git.kernel.org/stable/c/a5e507fadab76393cbc12344ebd65a417a09aa46 Ref git.kernel.org/stable/c/a96e60a6ea6818fd37b1853283a512c49af38cf5 Ref git.kernel.org/stable/c/f762acdaff9e54688be16e6c832c73a61533c1df Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-43851?

CVE-2024-43851 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-43851?

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-2024-43851?

How can CyberStrike help with CVE-2024-43851?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-43851 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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HackBrowser

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