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CVE-2022-49569

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers In case a IRQ based transfer times out the…

Published Feb 26, 2025CWE-476EPSS 0.26%

Overview

CVE-2022-49569 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:

spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers

In case a IRQ based transfer times out the bcm2835_spi_handle_err()

function is called. Since commit 1513ceee70f2 ("spi: bcm2835: Drop

dma_pending flag") the TX and RX DMA transfers are unconditionally

canceled, leading to NULL pointer derefs if ctlr->dma_tx or

ctlr->dma_rx are not set.

Fix the NULL pointer deref by checking that ctlr->dma_tx and

ctlr->dma_rx are valid pointers before accessing them.

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/49ffa473218012e765682343de2052eb4c1f06a7Refgit.kernel.org/stable/c/4ceaa684459d414992acbefb4e4c31f2dfc50641Refgit.kernel.org/stable/c/58466e05390043d2805685c70f55f3f59711bdf2Refgit.kernel.org/stable/c/684896e675edd8b669fd3e9f547c5038222d85bcRefgit.kernel.org/stable/c/76668d2a2f367d25ff448e6d7087406af7d7bb2b

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49569?

CVE-2022-49569 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-2022-49569?

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-2022-49569?

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-2022-49569?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49569 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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