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CVE-2022-49522

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mmc: jz4740: Apply DMA engine limits to maximum segment size Do what is done in other DMA-enabled MMC host drivers (cf.

Published Feb 26, 2025EPSS 0.26%

Overview

CVE-2022-49522 is a medium-severity vulnerability. It was published on February 26, 2025 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:

mmc: jz4740: Apply DMA engine limits to maximum segment size

Do what is done in other DMA-enabled MMC host drivers (cf. host/mmci.c) and

limit the maximum segment size based on the DMA engine's capabilities. This

is needed to avoid warnings like the following with CONFIG_DMA_API_DEBUG=y.

------------[ cut here ]------------

WARNING: CPU: 0 PID: 21 at kernel/dma/debug.c:1162 debug_dma_map_sg+0x2f4/0x39c

DMA-API: jz4780-dma 13420000.dma-controller: mapping sg segment longer than device claims to support [len=98304] [max=65536]

CPU: 0 PID: 21 Comm: kworker/0:1H Not tainted 5.18.0-rc1 #19

Workqueue: kblockd blk_mq_run_work_fn

Stack : 81575aec 00000004 80620000 80620000 80620000 805e7358 00000009 801537ac

814c832c 806276e3 806e34b4 80620000 81575aec 00000001 81575ab8 09291444

00000000 00000000 805e7358 81575958 ffffffea 8157596c 00000000 636f6c62

6220646b 80387a70 0000000f 6d5f6b6c 80620000 000000

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/353298cadbd4c7d8e8a16d6000066414694933c3Refgit.kernel.org/stable/c/7923f95997a79cef2ad161a2facae64c25a0bca0Refgit.kernel.org/stable/c/807f90f1960a59dc557542b818c484a8db9ac978Refgit.kernel.org/stable/c/90281cadf5077f2d2bec8b08c2ead1f8cd12660eRefgit.kernel.org/stable/c/a828920b9ec0d89d3011198d482b7fe224d2de19Refgit.kernel.org/stable/c/afadb04f1d6e74b18a253403f5274cde5e3fd7bd

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49522?

CVE-2022-49522 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49522?

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-2022-49522?

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-2022-49522?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49522 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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