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CVE-2024-35997

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up The flag I2C_HID_READ_PENDING is used to serialize I2C operat…

Published May 20, 2024CWE-667EPSS 0.18%

Overview

CVE-2024-35997 is a medium-severity vulnerability. It was published on May 20, 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:

HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up

The flag I2C_HID_READ_PENDING is used to serialize I2C operations.

However, this is not necessary, because I2C core already has its own

locking for that.

More importantly, this flag can cause a lock-up: if the flag is set in

i2c_hid_xfer() and an interrupt happens, the interrupt handler

(i2c_hid_irq) will check this flag and return immediately without doing

anything, then the interrupt handler will be invoked again in an

infinite loop.

Since interrupt handler is an RT task, it takes over the CPU and the

flag-clearing task never gets scheduled, thus we have a lock-up.

Delete this unnecessary flag.

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/0561b65fbd53d3e788c5b0222d9112ca016fd6a1Refgit.kernel.org/stable/c/21bfca822cfc1e71796124e93b46e0d9fa584401Refgit.kernel.org/stable/c/29e94f295bad5be59cf4271a93e22cdcf5536722Refgit.kernel.org/stable/c/418c5575d56410c6e186ab727bf32ae32447d497Refgit.kernel.org/stable/c/5095b93021b899f54c9355bebf36d78854c33a22Refgit.kernel.org/stable/c/9c0f59e47a90c54d0153f8ddc0f80d7a36207d0eRefgit.kernel.org/stable/c/b65fb50e04a95eec34a9d1bc138454a98a5578d8Refgit.kernel.org/stable/c/c448a9fd50f77e8fb9156ff64848aa4295eb3003Refgit.kernel.org/stable/c/0561b65fbd53d3e788c5b0222d9112ca016fd6a1Refgit.kernel.org/stable/c/21bfca822cfc1e71796124e93b46e0d9fa584401

How CyberStrike helps

Frequently asked questions

What is CVE-2024-35997?

CVE-2024-35997 is a medium-severity vulnerability. It was published on May 20, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-35997?

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-2024-35997?

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-2024-35997?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-35997 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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