What is CVE-2026-64209?

CVE-2026-64209 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 7.0 onward and patched in 7.0.11 and 7.1. CVE-2026-64209 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64209?

CVE-2026-64209 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2026-64209?

Yes, CVE-2026-64209 has been patched. Fixed versions include 7.0.11 and 7.1. If you are running Linux kernel 7.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64209 actively exploited?

CVE-2026-64209 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-2026-64209

High

In the Linux kernel, the following vulnerability has been resolved: phy: qcom: qmp-usbc: Fix out-of-bounds array access in dp swing config swing_tbl and pre_emphasis_tbl are 4x4 arrays (valid indices 0-3), but the boundary check uses "> 4" instead of ">= 4", allowing index 4 to cause an out-of-bounds access.

Package Linux Kernel

Published 2026-07-24

Last modified 2026-08-12

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2026-64209 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 7.0 and later are affected. Fixed in 7.0.11, 7.1 and their respective stable series.

Affected from

≥ 7.0

Fixed in

✓ 7.0.11 7.0.x ✓ 7.1

References

2 total

Kernel Git
https://git.kernel.org/stable/c/cb35af6e7f3d5628178b58c631e305b1def8edf7

Patch
Kernel Git
https://git.kernel.org/stable/c/ea17fc4d7dc2ba6459b1a318962960520201baf1

Patch

Details

CVE ID CVE-2026-64209

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2026-07-24

Modified 2026-08-12

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64209?

CVE-2026-64209 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 7.0 onward and has been patched in 7.0.11 and 7.1. CVE-2026-64209 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64209?

CVE-2026-64209 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2026-64209?

Yes. CVE-2026-64209 has been patched. Fixed versions include 7.0.11 and 7.1. If you are running Linux kernel 7.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64209 actively exploited?

No. CVE-2026-64209 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.