CVE-2026-23236
fbdev: smscufx: properly copy ioctl memory to kernelspace
Description
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.
INFO
Published Date :
March 4, 2026, 3:16 p.m.
Last Modified :
March 17, 2026, 9:20 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Ensure ioctl memory is correctly copied to kernelspace.
- Validate user-supplied data before kernel access.
Public PoC/Exploit Available at Github
CVE-2026-23236 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23236.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23236 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23236
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
DSA and DLA for Debian last 14 days
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23236 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23236 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.164 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.201 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.127 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.74 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.13 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.2 up to (excluding) 5.10.251 Added Reference Type kernel.org: https://git.kernel.org/stable/c/061cfeb560aa3ddc174153dbe5be9d0b55eb7248 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0634e8d650993602fc5b389ff7ac525f6542e141 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/120adae7b42faa641179270c067864544a50ab69 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/1c008ad0f0d1c1523902b9cdb08e404129677bfc Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/52917e265aa5f848212f60fc50fc504d8ef12866 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6167af934f956d3ae1e06d61f45cd0d1004bbe1a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a0321e6e58facb39fe191caa0e52ed9aab6a48fe Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 04, 2026
Action Type Old Value New Value Added Description 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. Added Reference https://git.kernel.org/stable/c/061cfeb560aa3ddc174153dbe5be9d0b55eb7248 Added Reference https://git.kernel.org/stable/c/0634e8d650993602fc5b389ff7ac525f6542e141 Added Reference https://git.kernel.org/stable/c/120adae7b42faa641179270c067864544a50ab69 Added Reference https://git.kernel.org/stable/c/1c008ad0f0d1c1523902b9cdb08e404129677bfc Added Reference https://git.kernel.org/stable/c/52917e265aa5f848212f60fc50fc504d8ef12866 Added Reference https://git.kernel.org/stable/c/6167af934f956d3ae1e06d61f45cd0d1004bbe1a Added Reference https://git.kernel.org/stable/c/a0321e6e58facb39fe191caa0e52ed9aab6a48fe Added Reference https://git.kernel.org/stable/c/f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02