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CVE-2026-64134

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Don't setup bogus iov_iter for silencing At transition to the iov_iter for PCM data transfer, we blindly applied the…

Published Jul 19, 2026CWE-476EPSS 0.13%

Overview

CVE-2026-64134 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:

ALSA: pcm: Don't setup bogus iov_iter for silencing

At transition to the iov_iter for PCM data transfer, we blindly

applied the iov_iter setup also for silencing (i.e. data = NULL), and

it leads to a calculation of bogus iov_iter. Fortunately this didn't

cause troubles on most of architectures but it goes wrong on RISC-V

now, causing a NULL dereference.

Handle the NULL data case to treat the silencing in interleaved_copy()

for addressing the bug above. noninterleaved_copy() has already the

NULL data handling, so it doesn't need changes.

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/41a766c647294842c9b17672449f8e011048cba9Refgit.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6Refgit.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9Refgit.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201eRefgit.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64134?

CVE-2026-64134 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-2026-64134?

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-2026-64134?

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-2026-64134?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64134 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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