What is CVE-2026-64160?

CVE-2026-64160 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10, affecting Linux kernel versions from 5.18 onward and patched in 7.0.11 and 7.1. CVE-2026-64160 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64160?

CVE-2026-64160 has a CVSS score of 9.8 out of 10, rated Critical severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-64160?

Yes, CVE-2026-64160 has been patched. Fixed versions include 7.0.11 and 7.1. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64160 actively exploited?

CVE-2026-64160 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-64160

Critical

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size. We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted.

Package Linux Kernel

Published 2026-07-19

Last modified 2026-08-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

9.8

out of 10

Critical

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.18 and later are affected. Fixed in 7.0.11, 7.1 and their respective stable series.

Affected from

≥ 5.18

Fixed in

✓ 7.0.11 7.0.x ✓ 7.1

References

2 total

Kernel Git
https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494

Patch
Kernel Git
https://git.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969

Patch

Details

CVE ID CVE-2026-64160

Severity Critical

CVSS score 9.8 / 10

CVSS version 3.1

Published 2026-07-19

Modified 2026-08-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64160?

CVE-2026-64160 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10 . It affects Linux kernel versions from 5.18 onward and has been patched in 7.0.11 and 7.1. CVE-2026-64160 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64160?

CVE-2026-64160 has a CVSS score of 9.8 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-64160?

Yes. CVE-2026-64160 has been patched. Fixed versions include 7.0.11 and 7.1. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64160 actively exploited?

No. CVE-2026-64160 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.