What is CVE-2026-64249?

CVE-2026-64249 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 4.10 onward and patched in 5.10.260, 5.15.211, 6.1.177 and others. CVE-2026-64249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64249?

CVE-2026-64249 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-2026-64249?

Yes, CVE-2026-64249 has been patched. Fixed versions include 5.10.260, 5.15.211, 6.1.177 and others. If you are running Linux kernel 4.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64249 actively exploited?

CVE-2026-64249 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-2026-64249

High

In the Linux kernel, the following vulnerability has been resolved: fpga: region: fix use-after-free in child_regions_with_firmware() Move of_node_put(child_region) after the error print to avoid accessing freed memory when pr_err() references child_region. [ Yilun: Fix the Fixes tag ]

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-2026-64249 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 4.10 and later are affected. Fixed in 5.10.260, 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

≥ 4.10

Fixed in

✓ 5.10.260 5.10.x ✓ 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

8 total

Kernel Git
https://git.kernel.org/stable/c/070b0ce947b18fa3dec0729695147f7e19599649

Patch
Kernel Git
https://git.kernel.org/stable/c/369496d885b4cf6e8647cf4dc5cf3ac68fdf37a1

Patch
Kernel Git
https://git.kernel.org/stable/c/54f3c5643ec523a04b6ec0e7c19eb10f5ebebdd3

Patch
Kernel Git
https://git.kernel.org/stable/c/5e098e40e8bac43ed58645c10d5fad781966efe4

Patch
Kernel Git
https://git.kernel.org/stable/c/866184fc7ae42a0070f1141ae8c5dca7c24a59e2

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-64249

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-2026-64249?

CVE-2026-64249 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 4.10 onward and has been patched in 5.10.260, 5.15.211, 6.1.177 and others. CVE-2026-64249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64249?

CVE-2026-64249 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-2026-64249?

Yes. CVE-2026-64249 has been patched. Fixed versions include 5.10.260, 5.15.211, 6.1.177 and others. If you are running Linux kernel 4.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64249 actively exploited?

No. CVE-2026-64249 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.