CVE-2024-36925

5.5 · MEDIUM

Published May 30, 2024 linux CWE-476 EPSS 0.23% (13th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-36925 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 30, 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:

swiotlb: initialise restricted pool list_head when SWIOTLB_DYNAMIC=y

Using restricted DMA pools (CONFIG_DMA_RESTRICTED_POOL=y) in conjunction

with dynamic SWIOTLB (CONFIG_SWIOTLB_DYNAMIC=y) leads to the following

crash when initialising the restricted pools at boot-time:

| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008

| Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP

| pc : rmem_swiotlb_device_init+0xfc/0x1ec

| lr : rmem_swiotlb_device_init+0xf0/0x1ec

| Call trace:

| rmem_swiotlb_device_init+0xfc/0x1ec

| of_reserved_mem_device_init_by_idx+0x18c/0x238

| of_dma_configure_id+0x31c/0x33c

| platform_dma_configure+0x34/0x80

faddr2line reveals that the crash is in the list validation code:

include/linux/list.h:83

include/linux/rculist.h:79

include/linux/rculist.h:106

kernel/dma/swiotlb.c:306

kernel/dma/swiotlb.c:1695

because add_mem_pool() is

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, < 6.6.31	Affected

References

Ref git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 Ref git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca Ref git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84 Ref git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 Ref git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca Ref git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84

Frequently Asked Questions

What is CVE-2024-36925?

CVE-2024-36925 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-36925?

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-2024-36925?

How can CyberStrike help with CVE-2024-36925?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-36925 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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