What is CVE-2026-23236?

CVE-2026-23236 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.2 onward and patched in 5.10.251, 5.15.201, 6.1.164 and others. CVE-2026-23236 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23236?

CVE-2026-23236 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-23236?

Yes, CVE-2026-23236 has been patched. Fixed versions include 5.10.251, 5.15.201, 6.1.164 and others. If you are running Linux kernel 3.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23236 actively exploited?

CVE-2026-23236 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23236

Medium

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: properly copy ioctl memory to kernelspace The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from userspace to kernelspace, and instead directly references the memory, which can cause problems if invalid data is passed from userspace. Fix this all up by correctly copying the memory before accessing it within the kernel.

Package Linux Kernel

Published 2026-03-04

Last modified 2026-06-02

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 3.2 and later are affected. Fixed in 5.10.251, 5.15.201, 6.1.164, 6.6.127, 6.12.74, 6.18.13, 6.19.3, 7.0 and their respective stable series.

Affected from

≥ 3.2

Fixed in

✓ 5.10.251 5.10.x ✓ 5.15.201 5.15.x ✓ 6.1.164 6.1.x ✓ 6.6.127 6.6.x ✓ 6.12.74 6.12.x ✓ 6.18.13 6.18.x ✓ 6.19.3 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-23236 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Cert-Portal
https://cert-portal.siemens.com/productcert/html/ssa-253495.html
Kernel patch commit
https://git.kernel.org/stable/c/061cfeb560aa3ddc174153dbe5be9d0b55eb7248
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0634e8d650993602fc5b389ff7ac525f6542e141
Patch
Kernel patch commit
https://git.kernel.org/stable/c/120adae7b42faa641179270c067864544a50ab69
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2026-23236

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-03-04

Modified 2026-06-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23236?

CVE-2026-23236 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.2 onward and has been patched in 5.10.251, 5.15.201, 6.1.164 and others. CVE-2026-23236 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23236?

CVE-2026-23236 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-23236?

Yes — CVE-2026-23236 has been patched. Fixed versions include 5.10.251, 5.15.201, 6.1.164 and others. If you are running Linux kernel 3.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23236 actively exploited?

No — CVE-2026-23236 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.