fbdev: smscufx: properly copy ioctl memory to kernelspace
Priority LOW 31Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00229 13th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.251, 5.15.201, 6.1.164 +5
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.2 and later | 5.10.251, 5.15.201, 6.1.164, 6.6.127, 6.12.74, 6.18.13, 6.19.3, 7.0 | Patch available | CNA |
- Linux VendorLinux Affected 3.2 and later 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 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.2 to before 5.10.251; 5.11 to before 5.15.201; 5.16 to before 6.1.164; 6.2 to before 6.6.127; 6.7 to before 6.12.74; 6.13 to before 6.18.13; 6.19 to before 6.19.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.2 to before 5.10.251; 5.11 to before 5.15.201; 5.16 to before 6.1.164; 6.2 to before 6.6.127; 6.7 to before 6.12.74; 6.13 to before 6.18.13; 6.19 to before 6.19.3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) 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
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-23236
- 2026-10-03 Alias added: GHSA-6c9m-6m34-wg94
References
Patch 8
- https://git.kernel.org/stable/c/061cfeb560aa3ddc174153dbe5be9d0b55eb7248
- https://git.kernel.org/stable/c/6167af934f956d3ae1e06d61f45cd0d1004bbe1a
- https://git.kernel.org/stable/c/a0321e6e58facb39fe191caa0e52ed9aab6a48fe
- https://git.kernel.org/stable/c/0634e8d650993602fc5b389ff7ac525f6542e141
- https://git.kernel.org/stable/c/52917e265aa5f848212f60fc50fc504d8ef12866
- https://git.kernel.org/stable/c/1c008ad0f0d1c1523902b9cdb08e404129677bfc
- https://git.kernel.org/stable/c/f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02
- https://git.kernel.org/stable/c/120adae7b42faa641179270c067864544a50ab69
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Sources
- CVE-2026-23236 · CVE Program
- CVE-2026-23236 · NVD
- FIRST EPSS
- GHSA-6c9m-6m34-wg94 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-23236 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences