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CVE-2026-63930

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: hw-consumer: fix use-after-free in error path In the err_put_buffers cleanup path of iio_hw_consumer_alloc(), the…

Published Jul 19, 2026EPSS 0.16%

Overview

CVE-2026-63930 is a high-severity vulnerability. It was published on July 19, 2026 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:

iio: buffer: hw-consumer: fix use-after-free in error path

In the err_put_buffers cleanup path of iio_hw_consumer_alloc(), the code

was using list_for_each_entry() to iterate through buffers while calling

iio_buffer_put() which can free the current buffer if refcount drops to 0.

The list_for_each_entry() loop macro then evaluates buf->head.next to

continue iteration, accessing the freed buffer.

Fix this by using list_for_each_entry_safe().

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/29783e6b6ec0b7152a15e53a063f17537e81177dRefgit.kernel.org/stable/c/2ff615fc455acda5425c4900160cbe11cfea4449Refgit.kernel.org/stable/c/6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4Refgit.kernel.org/stable/c/9319c94f63ed10723afd738d79f5617daba87cc8Refgit.kernel.org/stable/c/a3763ae33476328cf8d661742deb9daec78eac96Refgit.kernel.org/stable/c/b71893c57730809c222766e5718bb33610f11963Refgit.kernel.org/stable/c/d2759d49860b9a39b5cde2fb88e4b822ddf5f58fRefgit.kernel.org/stable/c/e965627f0d442bfcae3f496c90cb653fb0917a61

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63930?

CVE-2026-63930 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-63930?

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-2026-63930?

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-2026-63930?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63930 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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