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CVE-2024-42253

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: gpio: pca953x: fix pca953x_irq_bus_sync_unlock race Ensure that `i2c_lock' is held when setting interrupt latch and mask in pca…

Published Aug 8, 2024CWE-667EPSS 0.17%

Overview

CVE-2024-42253 is a high-severity vulnerability. It was published on August 8, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

gpio: pca953x: fix pca953x_irq_bus_sync_unlock race

Ensure that `i2c_lock' is held when setting interrupt latch and mask in

pca953x_irq_bus_sync_unlock() in order to avoid races.

The other (non-probe) call site pca953x_gpio_set_multiple() ensures the

lock is held before calling pca953x_write_regs().

The problem occurred when a request raced against irq_bus_sync_unlock()

approximately once per thousand reboots on an i.MX8MP based system.

* Normal case

0-0022: write register AI|3a {03,02,00,00,01} Input latch P0

0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0

0-0022: write register AI|08 {ff,00,00,00,00} Output P3

0-0022: write register AI|12 {fc,00,00,00,00} Config P3

* Race case

0-0022: write register AI|08 {ff,00,00,00,00} Output P3

0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register ***

0-0022: write register AI|12 {fc,00,00,00,00} Config P3

0-0022: write

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/58a5c93bd1a6e949267400080f07e57ffe05ec34Refgit.kernel.org/stable/c/bfc6444b57dc7186b6acc964705d7516cbaf3904Refgit.kernel.org/stable/c/de7cffa53149c7b48bd1bb29b02390c9f05b7f41Refgit.kernel.org/stable/c/e2ecdddca80dd845df42376e4b0197fe97018ba2Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42253?

CVE-2024-42253 is a high-severity vulnerability. It was published on August 8, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-42253?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-42253?

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-2024-42253?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42253 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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