What is CVE-2026-64246?

CVE-2026-64246 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 5.15 onward and patched in 5.15.211, 6.1.177, 6.6.144 and others. CVE-2026-64246 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64246?

CVE-2026-64246 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-2026-64246?

Yes, CVE-2026-64246 has been patched. Fixed versions include 5.15.211, 6.1.177, 6.6.144 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64246 actively exploited?

CVE-2026-64246 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2026-64246

High

In the Linux kernel, the following vulnerability has been resolved: power: reset: linkstation-poweroff: fix use-after-free in the linkstation_poweroff_init() Move of_node_put(dn) after the of_match_node() call, which still needs the node pointer. The node reference is correctly released after use.

Package Linux Kernel

Published 2026-07-24

Last modified 2026-08-17

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-416

CVE-2026-64246 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.211, 6.1.177, 6.6.144, 6.12.95, 6.18.38, 7.1.3, 7.2 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.211 5.15.x ✓ 6.1.177 6.1.x ✓ 6.6.144 6.6.x ✓ 6.12.95 6.12.x ✓ 6.18.38 6.18.x ✓ 7.1.3 7.1.x ✓ 7.2

References

7 total

Kernel Git
https://git.kernel.org/stable/c/2205275be9be981e70ff29610b0117d8853fac70

Patch
Kernel Git
https://git.kernel.org/stable/c/3928ae803dee044b01076c478c279c0bd54164cd

Patch
Kernel Git
https://git.kernel.org/stable/c/8eec545cde69e46e9a1d2b7d915ce4f5df85b3bd

Patch
Kernel Git
https://git.kernel.org/stable/c/93c7ee139721936b6fa717572e74d3994603ae13

Patch
Kernel Git
https://git.kernel.org/stable/c/c04d606f8b35ee7d3ed243f63893a607e9d6c0bc

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2026-64246

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-07-24

Modified 2026-08-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64246?

CVE-2026-64246 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.211, 6.1.177, 6.6.144 and others. CVE-2026-64246 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64246?

CVE-2026-64246 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-2026-64246?

Yes. CVE-2026-64246 has been patched. Fixed versions include 5.15.211, 6.1.177, 6.6.144 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64246 actively exploited?

No. CVE-2026-64246 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.