HighFix available
fbdev: smscufx: properly copy ioctl memory to kernelspace
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.251, 5.15.201, 6.1.164, 6.12.74, 6.18.13, 6.19.3, 6.6.127
- CVEs
- CVE-2026-23236
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 06:58 UTC · Revision 1
Source evidence
fbdev: smscufx: properly copy ioctl memory to kernelspace
core-osv · Original sourcePublished 4 Mar 2026, 14:36 UTC
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.
osv:CVE-2026-23236
Kernel
Fixed versions: 5.10.251, 5.15.201, 6.1.164, 6.6.127, 6.12.74, 6.18.13, 6.19.3
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2026-23236",
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"title": "fbdev: smscufx: properly copy ioctl memory to kernelspace",
"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.",
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"modified": "2026-10-28T02:30:26.911651586Z",
"provider": "osv",
"references": [
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"https://nvd.nist.gov/vuln/detail/CVE-2026-23236",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
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"source_id": "core-osv",
"document_id": 493182,
"published_at": "2026-03-04T14:36:40.162+00:00"
}