fbdev: smscufx: properly copy ioctl memory to kernelspace

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Summary

CVECVE-2026-23236
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-04 15:16:14 UTC
Updated2026-04-02 15:16:24 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.3HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
3.1CNADECLARED7.3HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 061cfeb560aa3ddc174153dbe5be9d0b55eb7248 git Not specified
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 6167af934f956d3ae1e06d61f45cd0d1004bbe1a git Not specified
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 a0321e6e58facb39fe191caa0e52ed9aab6a48fe git Not specified
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 0634e8d650993602fc5b389ff7ac525f6542e141 git Not specified
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 52917e265aa5f848212f60fc50fc504d8ef12866 git Not specified
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 1c008ad0f0d1c1523902b9cdb08e404129677bfc git Not specified
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02 git Not specified
CNA Linux Linux affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 120adae7b42faa641179270c067864544a50ab69 git Not specified
CNA Linux Linux affected 3.2 Not specified
CNA Linux Linux unaffected 3.2 semver Not specified
CNA Linux Linux unaffected 5.10.251 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.201 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.164 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.127 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.74 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.13 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.3 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1c008ad0f0d1c1523902b9cdb08e404129677bfc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/061cfeb560aa3ddc174153dbe5be9d0b55eb7248 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6167af934f956d3ae1e06d61f45cd0d1004bbe1a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/120adae7b42faa641179270c067864544a50ab69 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a0321e6e58facb39fe191caa0e52ed9aab6a48fe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/52917e265aa5f848212f60fc50fc504d8ef12866 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0634e8d650993602fc5b389ff7ac525f6542e141 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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