What is CVE-2026-64134?

CVE-2026-64134 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 6.6 onward and patched in 6.6.142, 6.12.92, 6.18.34 and others. CVE-2026-64134 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64134?

CVE-2026-64134 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-64134?

Yes, CVE-2026-64134 has been patched. Fixed versions include 6.6.142, 6.12.92, 6.18.34 and others. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64134 actively exploited?

CVE-2026-64134 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2026-64134

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 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.

Package Linux Kernel

Published 2026-07-19

Last modified 2026-08-13

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-476

CVE-2026-64134 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.6 and later are affected. Fixed in 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1 and their respective stable series.

Affected from

≥ 6.6

Fixed in

✓ 6.6.142 6.6.x ✓ 6.12.92 6.12.x ✓ 6.18.34 6.18.x ✓ 7.0.11 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9

Patch
Kernel Git
https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6

Patch
Kernel Git
https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9

Patch
Kernel Git
https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e

Patch
Kernel Git
https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d

Patch

Details

CVE ID CVE-2026-64134

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-07-19

Modified 2026-08-13

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64134?

CVE-2026-64134 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 6.6 onward and has been patched in 6.6.142, 6.12.92, 6.18.34 and others. CVE-2026-64134 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64134?

CVE-2026-64134 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-64134?

Yes. CVE-2026-64134 has been patched. Fixed versions include 6.6.142, 6.12.92, 6.18.34 and others. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64134 actively exploited?

No. CVE-2026-64134 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.