What is CVE-2026-64058?

CVE-2026-64058 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 6.12 onward and patched in 6.18.34, 7.0.11 and 7.1. CVE-2026-64058 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64058?

CVE-2026-64058 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-2026-64058?

Yes, CVE-2026-64058 has been patched. Fixed versions include 6.18.34, 7.0.11 and 7.1. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64058 actively exploited?

CVE-2026-64058 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2026-64058

High

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix netfs_read_folio() to wait on writeback Fix netfs_read_folio() to wait for an ongoing writeback to complete so that it can trust the dirty flag and whatever is attached to folio->private (folio->private may get cleaned up by the collector before it clears the writeback flag).

Package Linux Kernel

Published 2026-07-19

Last modified 2026-09-02

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-125

CVE-2026-64058 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.12 and later are affected. Fixed in 6.18.34, 7.0.11, 7.1 and their respective stable series.

Affected from

≥ 6.12

Fixed in

✓ 6.18.34 6.18.x ✓ 7.0.11 7.0.x ✓ 7.1

References

3 total

Kernel Git
https://git.kernel.org/stable/c/b8271cccdd5e43cc8d738afb8b51f6ad05b1cb4b

Patch
Kernel Git
https://git.kernel.org/stable/c/ded0c6f1606061148c202825f7e53d711f9f84cf

Patch
Kernel Git
https://git.kernel.org/stable/c/f17b9121bb99f88188ec9be2db5da1d561f4c01b

Patch

Details

CVE ID CVE-2026-64058

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-07-19

Modified 2026-09-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64058?

CVE-2026-64058 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 6.12 onward and has been patched in 6.18.34, 7.0.11 and 7.1. CVE-2026-64058 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64058?

CVE-2026-64058 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-2026-64058?

Yes. CVE-2026-64058 has been patched. Fixed versions include 6.18.34, 7.0.11 and 7.1. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64058 actively exploited?

No. CVE-2026-64058 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.